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易陆发现论坛»论坛 › 操作系统区 › 非桌面系统 › Ubuntu系统 › ubuntu 系统配置网卡，直接networking restart失败。使 ...
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ubuntu 系统配置网卡，直接networking restart失败。使用ifup interface 才生效

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发表于 2022-1-12 11:27:15 | 显示全部楼层 |阅读模式
root@controller:~# vim /etc/network/interfaces
' ~6 z# K7 Q: G* N5 ~, a( ?% ?- iinterfaces    interfaces.d/
# H9 F4 c) G# W1 _" ]. Proot@controller:~# vim /etc/network/interfaces
$ N9 B. L+ C9 }3 V# B: Z: proot@controller:~# service networking restart+ g9 F$ V2 y( t% \$ @
stop: Job failed while stopping5 H5 q' B) B* r8 {. U6 S
start: Job is already running: networking
/ C1 S# |' y8 ]4 r6 Broot@controller:~# ip addr
: w2 q, ?+ {; u1 ~: O- B# a8 ]1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
6 P4 ~- l9 S5 Y8 ]    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00, a$ V* Q* A2 c! L
    inet 127.0.0.1/8 scope host lo
( b7 u# {' C1 T# p1 D' V. \       valid_lft forever preferred_lft forever. Z8 z3 w  A( K# R3 W$ _2 h6 J1 g" y! E- u
    inet6 ::1/128 scope host , i4 x( o# P+ l. w6 ]7 z
       valid_lft forever preferred_lft forever
4 s, a* p3 J* h! F2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000% ~5 C* |# ?/ Z( b* E9 _: i- ]" I
    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff. \% k9 H" L1 |1 o  |7 |1 ~
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
7 H5 N3 [( ?+ O) m( v- H    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff
7 Y4 D( P4 ]' b+ ?: o7 v4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
; j1 u9 c5 E* P    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff+ L4 V/ P, m/ G6 B% @2 E8 F
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
# E8 p9 @9 h5 ], {3 v' I6 k    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff6 S% Y& v1 @* F% k) ?% K" s; k9 \
    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth3
1 _1 i3 |2 l) @4 h2 {  e2 p# F7 `       valid_lft forever preferred_lft forever" e. F( G; a4 w' k5 V0 Y
    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link
% ?1 f( o6 k2 ?. H" i# ^) ~       valid_lft forever preferred_lft forever
+ R, j0 ]( Z; W$ z3 m. F' B4 xroot@controller:~# /etc/init- X& J& D' c! }/ Y
init/            init.d/          initramfs-tools/ + e- h4 u: o- |
root@controller:~# /etc/init.d/networking restart
, d, ?- x2 t2 u2 e! F, N2 B; broot@controller:~# ip addr
1 Q- u( W. C3 M7 I: }3 ^- e1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
- m+ i; W$ |7 c1 ^* I3 C! L    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
8 A. v- N+ c/ r3 x+ U, G) s1 S    inet 127.0.0.1/8 scope host lo
! v& D/ V$ G% l9 j2 K: U       valid_lft forever preferred_lft forever! F/ {7 S; v, }5 f4 B0 g
    inet6 ::1/128 scope host
0 d: H' z. J8 t/ {9 V; @. ~       valid_lft forever preferred_lft forever% N2 B8 `+ \: h4 M
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000% U1 w. K' D' Z
    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff
% h5 r) z! [! d6 X# g$ K8 T. o4 c3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000% q2 I/ W6 `7 M0 @+ R- l1 N# E8 a
    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff
, [5 u$ O6 y& T' }4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 10009 G1 E8 f" n0 x0 ^
    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff/ T3 m9 [" ?/ |2 a' n" G4 g& ]
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
$ l# ?6 I$ }! {: o2 l( y+ r    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff9 v) ?; K8 Q/ C& N1 d5 U
    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth3
; ~4 |/ _; D3 R+ g# ^* p. U: B       valid_lft forever preferred_lft forever1 x. ^) |( H3 \* U9 m
    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link
0 J9 K7 Q$ E! h% _% c  S       valid_lft forever preferred_lft forever
, p8 l2 l! e9 g  [0 y5 A" Mroot@controller:~# ifup eth0
" w, `' y) [+ d: Z: {$ g( XInternet Systems Consortium DHCP Client 4.2.4
( B9 `1 v, ~& f/ [( \( @Copyright 2004-2012 Internet Systems Consortium.8 V" Y+ n) p0 t
All rights reserved.' Q$ z! @8 H: M3 A2 z! J/ f/ h
For info, please visit https://www.isc.org/software/dhcp/
6 _/ t+ I% M. ]0 IListening on LPF/eth0/00:0c:29:8c:59:8c
* D8 F8 k+ C5 N- ^- zSending on   LPF/eth0/00:0c:29:8c:59:8c' n8 w, D8 W5 l8 o' M
Sending on   Socket/fallback8 M8 ~9 T* w# ~' r
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0xeb67d11f)! i( B6 W0 I/ j# [

3 J; U- C9 d, F( }& c) Q) k' R: E4 MDHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0xeb67d11f)
0 \7 Y# e9 S) q" i8 F; W# a: h" T3 t, u- L# p1 P6 k- q
. ], b' \- f! n9 |
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0xeb67d11f)
, i. g% F% A  u! m- T3 W0 f* D8 ~6 `& `& B! M

8 v9 B) d' P+ V" Z% k! L1 n" c' @' `- \root@controller:~# ip addr3 s" \; ?( H- ?0 h6 B4 s, u2 m
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default # E9 D" F' r8 _7 J* u  J
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:006 G$ N" h" _" l- K
    inet 127.0.0.1/8 scope host lo
/ T1 G9 k) U  n, X8 S; `9 F       valid_lft forever preferred_lft forever
0 u3 ^  [% T2 t! W* ~0 N    inet6 ::1/128 scope host 2 @2 O3 ~- g' D
       valid_lft forever preferred_lft forever- z! I4 }% u5 g
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000( R6 |: v  B$ }' j1 W8 W/ o1 F9 n
    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff" U. p2 U7 L' m/ p. o* q
    inet6 fe80::20c:29ff:fe8c:598c/64 scope link
# V6 @  n8 ?8 v! E       valid_lft forever preferred_lft forever
8 X  c5 `% I- d) P% C2 d4 Q5 g3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
& F( F& m" x8 k; k% v/ X  K6 i. j# u    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff3 ^1 Q; B% m% q8 ^9 J
4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000  ^' Y8 h: K2 J) F
    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff9 T: h" U, B8 l% r2 j# ^  G. Q
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000; R: I% p( s$ T) X0 G
    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff8 S# f9 g! r  @, M6 H- Q
    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth3
+ Y' U% v6 q+ E" L# x$ Q       valid_lft forever preferred_lft forever$ t, ^9 k* C( J( M$ `7 e2 Q4 i
    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link
2 M2 z# _4 d0 g$ w6 Q& Y       valid_lft forever preferred_lft forever( c3 y: i( e* c. j7 g7 O2 _
root@controller:~# ifup eth1
5 w& L( S3 L" ~" WInternet Systems Consortium DHCP Client 4.2.4
# c# r  S8 X0 D% f, qCopyright 2004-2012 Internet Systems Consortium.) S; u" j0 j+ g8 N/ O7 ~$ e9 O, E
All rights reserved.
4 M* n  k  \! o6 M( V- x/ H8 W, r  Z: ]For info, please visit https://www.isc.org/software/dhcp/
* z0 N% c, O* V+ x0 L$ iListening on LPF/eth1/00:0c:29:8c:59:96
: [/ P. I' Y' d+ N1 HSending on   LPF/eth1/00:0c:29:8c:59:96& u4 _, M+ i' b7 F$ S) M  ]
Sending on   Socket/fallback
; G% q6 `/ N0 dDHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 3 (xid=0x21870d6a)
/ U1 Q* Q, B* TDHCPREQUEST of 171.10.91.128 on eth1 to 255.255.255.255 port 67 (xid=0x6a0d8721)
0 P" k) L9 z" S( t8 H1 u+ MDHCPOFFER of 171.10.91.128 from 171.10.91.254
$ r6 `- d6 x/ l" R3 rDHCPACK of 171.10.91.128 from 171.10.91.2541 O7 c9 V' ~, L! \# M! d
bound to 171.10.91.128 -- renewal in 899 seconds.
! Z, A) F+ Y# b0 b9 ~* x4 A, s' `; Xroot@controller:~# $ }. ?% c. f. R( E
root@controller:~#
! j- G0 U- g3 I# A3 }root@controller:~#
% E; P/ {  ^& X& wroot@controller:~# ifup eth0
; q. ^8 o/ h; n1 ~9 `: w8 K; lifup: interface eth0 already configured
) P* t6 D1 s4 n4 \1 J0 mroot@controller:~# ifup eth2
  C. u3 N; Q8 Z2 D0 w% e0 S1 dInternet Systems Consortium DHCP Client 4.2.4
( }6 N7 u) H" f; QCopyright 2004-2012 Internet Systems Consortium.8 c6 d7 O3 u0 h, J9 r1 F
All rights reserved.
( x2 y6 R. f9 d! o( ^+ W3 gFor info, please visit https://www.isc.org/software/dhcp/
5 R2 f( H& d- hListening on LPF/eth2/00:0c:29:8c:59:a0& ?4 g! \) D1 G* e* i4 j* c; \" e
Sending on   LPF/eth2/00:0c:29:8c:59:a0) T) T8 ^" O* c/ M
Sending on   Socket/fallback7 F, n! T& r/ E0 E! K" B4 n
DHCPDISCOVER on eth2 to 255.255.255.255 port 67 interval 3 (xid=0x685a54b), Z% ^7 S8 u3 ~9 k# q. m
DHCPREQUEST of 162.96.90.128 on eth2 to 255.255.255.255 port 67 (xid=0x4ba58506)
! W% J5 B5 m3 n% G# Z/ BDHCPOFFER of 162.96.90.128 from 162.96.90.2545 }, }6 o% q' f$ I! v
DHCPACK of 162.96.90.128 from 162.96.90.254
6 _" d0 F5 N. N, \% t; gbound to 162.96.90.128 -- renewal in 823 seconds.* O" s2 {9 x5 B2 S
root@controller:~# ip addr
9 e( h- u' F. M3 v! E1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
5 f  h4 y; q9 h, @5 Z/ h' m3 V    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00+ b2 o2 x& Q/ m7 T+ _
    inet 127.0.0.1/8 scope host lo2 Y. b9 P0 }2 a% _
       valid_lft forever preferred_lft forever: Z2 z& |0 B$ M5 }6 d( `& ~
    inet6 ::1/128 scope host 6 u* l4 ^/ F: ]* s! o9 d9 z! H9 K
       valid_lft forever preferred_lft forever7 c: j( J- d& A- w# L2 h& z
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 10000 S3 [1 k' z* `& X3 b
    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff( V0 m  k8 ^& r+ Q# ~* ^) f' |: B
    inet6 fe80::20c:29ff:fe8c:598c/64 scope link
8 I6 p  J+ r! t3 Z& I. v       valid_lft forever preferred_lft forever# s/ o& @$ D8 C0 f$ ~- O
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
( R3 |4 k2 f( m* ~7 S    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff, O4 _: x2 M3 U: B* Z
    inet 171.10.91.128/24 brd 171.10.91.255 scope global eth12 u, Q6 }. i( _3 W8 q
       valid_lft forever preferred_lft forever/ i  k0 s( x$ b3 O' ~
    inet6 fe80::20c:29ff:fe8c:5996/64 scope link : p5 G% \2 L1 e- y7 t
       valid_lft forever preferred_lft forever
& f1 c' d0 f5 Q; v1 z4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
& W( W; l4 w1 n4 c* ?/ V    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff
% a2 R9 o: a% O& W1 R5 @    inet 162.96.90.128/24 brd 162.96.90.255 scope global eth2+ m4 w3 R4 I& |. g% p
       valid_lft forever preferred_lft forever
+ c" r7 D- {  U5 W1 R' o1 k    inet6 fe80::20c:29ff:fe8c:59a0/64 scope link
4 ~0 _& p) z) `* L8 }       valid_lft forever preferred_lft forever" P0 H0 u( s0 H! J, I& G' L6 y' z8 Z- S
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000. w  P7 j9 x+ S9 [1 C. N
    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff6 ^, R0 L9 w4 C
    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth3  l  k9 |0 l+ S# s/ o% w9 Z
       valid_lft forever preferred_lft forever
6 T2 ]& _% c- m6 Q) U% A    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link 6 a! n6 h$ p' {! l& l  A$ w) z
       valid_lft forever preferred_lft forever
3 C, M6 ?" R3 d0 C) U! i  a: rroot@controller:~# reboot% F, Q1 m/ C2 h8 [
root@controller:~# ; }1 l) ^' e& N8 F, \
Broadcast message from root@controller# j: t. y1 J6 ?. _( q# B3 v
(/dev/pts/0) at 11:25 ...
, B) O& V: s8 i% NThe system is going down for reboot NOW!
; d+ f% m# s3 U" m% s
7 H" E; z4 R+ A+ H/ X' p* I
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 楼主| 发表于 2022-1-12 11:28:47 | 显示全部楼层
Ubuntu14.04修改配置，重启网卡没有生效，出现如下问题：' l0 M8 j. L' i! y
3 c& h4 K* o( m8 R0 f5 `
# cat /etc/issue
6 i3 b3 q' D  e$ I$ ^; @  SUbuntu 14.04 LTS \n \l
, u! W% G% `/ r7 \& t7 y3 {: q# service  networking restart
9 u6 w3 E- p; ]3 Wstop: Job failed while stopping
( `  N1 \, {' }! M/ ^6 L5 ~start: Job is already running: networking6 @' T# K, O% @- ?
# tail -f /var/log/upstart/networking.log
$ {7 q! b3 I$ D' WStopping or restarting the networking job is not supported.- n. J6 U# x* r
Use ifdown & ifup to reconfigure desired interface.
8 B* \2 ~9 G4 N# T2 G从以上日志内容可以看出，传统的service重启和停止网络已经不再支持了，需要通过使用ifdown & ifup来实现相应的操作。$ M4 F2 F3 [. P8 E6 L( _1 v' s

! o  \- K6 U& ~( X! f重启指定网卡/ e* i# D0 G4 D/ w. T0 [% `! b
# ifdown eth0 && ifup eth0
" u! U1 o3 H3 g' S1 t重启除lo网卡的所有网卡  e  ~# W0 k% t9 p, y2 V
# ifdown --exclude=lo -a && sudo ifup --exclude=lo -a
9 e( C: J/ o) O; H3 k配置桥接
8 u5 l) s1 ?6 j# o4 Z# apt-get install bridge-utils+ m4 q6 t1 d$ r# M4 F6 `
# cat /etc/network/interfaces' {" {) u, g& W& D6 q- p
auto lo
" H5 \/ h- x9 s9 m% K0 t4 Uiface lo inet loopback
6 ~& C9 r5 }: {0 C# t* K5 k2 `
0 r+ d) a' V% q: W+ h6 oauto eth0
* p6 E3 L' D  u' R- A* q, z8 Miface eth0 inet manual- C3 ^8 {% N4 I& J& E: Q1 E2 f7 z2 G5 g
6 o$ s4 i( [! e1 h: O/ `
auto br06 `6 F  F: g1 G2 {- d) |
iface br0 inet static- `) x  d( G8 _, ~
address 192.168.0.10
" U- o* T$ b  l& x4 }# @5 X: q! @netmask 255.255.255.0) I* W$ D, z7 g0 }) [1 \: |( |
gateway 192.168.0.15 ^! F1 f2 x/ n9 e7 ^- a
bridge_ports eth0. `" F# }8 o& i% f# s' m* K
bridge_stp off
$ y" t. X6 Q0 E/ e. R7 O' k% N+ P( P* Obridge_fd 0# T$ Z' i6 |$ @& ^+ C& N
bridge_maxwait 0: G! H8 I3 z% y4 r5 U
dns-nameservers 192.168.0.19 A* d4 _% D3 C' U
# ifup br0
6 @) |9 u) X$ J, @4 Q# brctl  show
3 G" u% [  T. A8 Xbridge name   bridge id       STP enabled interfaces
$ N# I' O/ |& b5 {! [8 ibr0       8000.02000a0080e1   no      eth0
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 楼主| 发表于 2022-1-12 11:32:22 | 显示全部楼层
root@controller:~# vim /etc/network/interfaces
, `3 ]% z6 W8 n  J( S$ A8 l( Sauto eth3
. T1 I' b, Y4 l& Ziface eth3 inet static
" s0 t. W( D$ a5 O2 A9 W  s5 M6 Yaddress 192.168.13.155
, G0 c$ a3 r3 l* v  {7 ]netmask 255.255.255.0
: Y2 ?- z- |, i. Q8 T) N6 `gateway 192.168.13.21 d9 k# t  H" Q
dns-nameservers 114.114.114.114
& d& D7 E% v5 G6 a+ T8 S& {! E/ v2 O9 \  A+ }$ Q; Y7 n8 U3 E$ m
保存退出，重新启动网卡：2 Y3 Q1 m* J! h% m4 ]7 b+ @
ifdown eth3 && ifup eth3 &
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 楼主| 发表于 2022-1-12 11:44:03 | 显示全部楼层
root@controller:~# vim /etc/network/interfaces
# n- H1 {# l& a: X# {root@controller:~# ifdown eth1 eth2
( e' j: g. d" Droot@controller:~# ip addr
3 @; B: u9 [) h; A1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
$ p% i0 C; b7 s    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:003 x% ~: Y: H7 G3 T* O5 h
    inet 127.0.0.1/8 scope host lo
* s( x' Z, g2 J8 L# {/ I$ F+ K! @* q       valid_lft forever preferred_lft forever; W* Q2 |: |  I9 C6 L/ x# D
    inet6 ::1/128 scope host
8 b6 ?  F$ l+ ?, T       valid_lft forever preferred_lft forever+ E7 N# q% D: Z2 W* y# O! p
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
5 Y' [4 I6 B. q$ G    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff* W1 ~% Z5 c' [1 v
    inet6 fe80::20c:29ff:fe8c:598c/64 scope link
( k  W$ {7 }/ _' P       valid_lft forever preferred_lft forever
/ R6 m5 U) y' b& r& E$ z2 F3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000( F  G9 H. G* J6 m
    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff$ O/ L+ S! l, I$ ~
4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000. W) d: |+ N. ]* p3 Q0 V) t
    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff
7 O7 X4 R% H# B: B: w, x: q! h$ M5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000/ g8 f! L9 f# j4 v, c
    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff
, `; a5 `6 O  l& _/ l6 O6 \' \- a0 s    inet 192.168.13.155/24 brd 192.168.13.255 scope global eth3
* Q& Q  {: t, |  Y/ o6 A       valid_lft forever preferred_lft forever
- A' R1 x  [2 }0 m4 h    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link 1 Y1 f% Y4 Z) g6 k4 d
       valid_lft forever preferred_lft forever7 k! g% W; s2 O4 |
root@controller:~# ifup  eth1 eth2
) S' u) L- d, u# H4 Q2 iError: an inet prefix is expected rather than "171.10.91.128/255.255.225.0".. F! C* s# W5 J: }, }% k" X; f% v
Failed to bring up eth1.: N) T6 m2 ?% x( n
Error: an inet prefix is expected rather than "162.96.90.155/255.255.225.0".+ ^+ d. T+ _; j8 g8 C
Failed to bring up eth2.
* u' N$ D: r2 {: X6 |+ i& H* [; ^2 P: x) O. a
root@controller:~# ifdown  eth1 eth24 ^) z. d! `  f* s
root@controller:~# ifup  eth1 eth29 K  V. ?0 |  l) o7 v) c1 p  s
root@controller:~#
; Y4 L( t" M! L% {* d7 L# u
5 K: s$ \, Q: F% X' Y! u
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