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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
5 q4 i4 v8 g$ S- X2 K! Hinterfaces    interfaces.d/ + d% L$ Q/ {* |$ }! k
root@controller:~# vim /etc/network/interfaces! u5 D" w! L1 z$ N$ t' W0 s
root@controller:~# service networking restart
8 c5 z2 `/ i7 j; |/ O% p9 [: L1 t  Hstop: Job failed while stopping0 i& r+ R3 P/ D. {* ]
start: Job is already running: networking; N/ [+ C4 R0 E' m" r4 s$ t# c
root@controller:~# ip addr
1 s- |2 o5 q: ^0 }( f1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
4 ~1 Y0 p7 R" `    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
; L- h0 o) j* Q    inet 127.0.0.1/8 scope host lo
! u, e+ @4 w5 R7 r0 X2 X3 C/ R       valid_lft forever preferred_lft forever4 p) @. [( ?2 x! G! z8 ?# H
    inet6 ::1/128 scope host
: W( G4 N) j4 R+ e. G+ v       valid_lft forever preferred_lft forever0 b5 {# M) k1 Y5 L* V
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000% m8 [( ?9 N! ?& M9 {
    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff2 e) N( U& Z! A
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 10006 t" y  @* K9 O
    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff0 W1 i. \3 U: w) @
4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 10003 S, N$ }5 d: D! h1 T/ v. I! O
    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff
* G! F  O, b8 T4 q& r5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 10007 {; b$ Y( R6 M( N6 b4 Y" K# o6 k
    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff
6 _7 m/ k7 H) R- s* M* F% [    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth3
: g' @+ X+ F# t/ f       valid_lft forever preferred_lft forever% H; c! g+ T: [$ c4 Z3 s. ?
    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link
! i) m* B' {: f- ^$ O' P7 W9 [       valid_lft forever preferred_lft forever
8 _  k4 I7 V; d( wroot@controller:~# /etc/init
9 e! d5 B( {" b: l0 f; Binit/            init.d/          initramfs-tools/ , @8 X8 Y7 g; H: C7 e7 |
root@controller:~# /etc/init.d/networking restart& R6 ~* h4 \8 ~, v. g' m/ l/ s
root@controller:~# ip addr! J/ ~9 ?, L0 [: @: l7 n  f, R3 @4 l
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
3 C* u  u" ?$ T8 G3 k$ @7 G; f' z" j* z    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
* _$ f" i# `2 R6 [/ F; L) }; s: [    inet 127.0.0.1/8 scope host lo5 S" t2 X. P* I7 A( W
       valid_lft forever preferred_lft forever
$ q$ A( u% w1 H+ u5 V- R    inet6 ::1/128 scope host
, R$ T( ?- C! I: O/ c& B       valid_lft forever preferred_lft forever
1 b$ b. d5 c& X# C6 O( H: X! I; U2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000) b# |7 |% f; b0 N
    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff& v% W9 c. u7 @/ O# F5 W
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
2 v/ ]: W8 t5 j    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff
4 R# O2 I: U- Z+ H) M4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
5 Z( I9 ~8 h3 }    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff; l! ?4 w" L& Z- e/ b( Z
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
" ~1 q$ Y, L# q0 ]. e  s" j    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff7 C8 Z- {9 r7 `; v
    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth32 ^) a/ [: I' f7 d- {
       valid_lft forever preferred_lft forever
) p; J2 t+ i, L2 {8 E    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link
' R" Z8 x4 p, K% T       valid_lft forever preferred_lft forever  c3 j" k" r: P. [8 ~' w7 {# ?
root@controller:~# ifup eth0  |0 z' A0 c1 i: X
Internet Systems Consortium DHCP Client 4.2.4
3 f/ e) b. Q' B/ g0 C" ?7 C) fCopyright 2004-2012 Internet Systems Consortium.
7 D4 ^0 c9 y# B  V- ~7 N9 QAll rights reserved.
/ N- q& c8 j/ aFor info, please visit https://www.isc.org/software/dhcp/( q* \' P- ]7 u0 j! ?
Listening on LPF/eth0/00:0c:29:8c:59:8c' [8 W8 |4 ]7 K0 {: G. A1 M6 k( X
Sending on   LPF/eth0/00:0c:29:8c:59:8c
# E  I4 M3 n! Z9 F: BSending on   Socket/fallback. m5 i/ o+ L; ^. k9 E1 z
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0xeb67d11f)' U7 }3 X/ M4 N4 Y
- R2 ^/ s: [+ L8 Y; W; w
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0xeb67d11f)& ], n+ z0 Y: S0 w; T

) d5 ?% C9 {) o: _8 U. J' ]6 a' X& J1 _( |/ p, D- h
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0xeb67d11f)
4 b6 F! ?  Q4 P3 g! v5 u; D4 _' V/ ^
) V0 R; l) u  ^
root@controller:~# ip addr
  X/ w+ R0 F8 G; ]. ]3 `) k1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default ! O+ `3 t' A0 A1 j4 L
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:006 |) d% T* u) @8 j; l8 L
    inet 127.0.0.1/8 scope host lo' f( J8 f* e: J: s
       valid_lft forever preferred_lft forever
0 G/ u' B! [0 o    inet6 ::1/128 scope host
; g3 s. R3 h/ p$ k       valid_lft forever preferred_lft forever
' Y) _9 I5 g0 ?2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000; `7 |) r$ {1 W) A
    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff8 [1 Y  t! s. r4 W
    inet6 fe80::20c:29ff:fe8c:598c/64 scope link : H( N# C$ K0 T2 L  A: A9 {) F
       valid_lft forever preferred_lft forever
% d5 g5 f1 N8 c! }3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
0 J6 ~0 k  L. n& K3 t    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff
/ P7 B1 |8 ~6 M) _" s! r4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000  X3 L( Y' _4 N& Z- H# \
    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff
. m& A; _0 c. }5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000* a, p* y+ A3 B+ }0 z- X2 v
    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff
7 _0 @5 e3 ]; x. K9 v% J3 E    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth3
8 Q" U, b$ E- i1 t" j       valid_lft forever preferred_lft forever$ t( O( `5 U% k) {) x1 i
    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link , ~0 D) j1 D" {- q! Q$ M5 d
       valid_lft forever preferred_lft forever+ S. v' A2 h! L0 \, v# T5 l
root@controller:~# ifup eth1, Z& R3 X3 X' B, {; O& z3 q
Internet Systems Consortium DHCP Client 4.2.4
* T$ O* j: j# u% m" j7 YCopyright 2004-2012 Internet Systems Consortium.
. v% A" F; u3 A/ b4 n! o) aAll rights reserved.
) D  c- \8 F% \, sFor info, please visit https://www.isc.org/software/dhcp/
6 J1 R: Q, {' {5 \Listening on LPF/eth1/00:0c:29:8c:59:96) U+ ~0 u; {6 Z: j
Sending on   LPF/eth1/00:0c:29:8c:59:96
  K! B" c8 O# c4 J# b0 G! C1 ]8 ESending on   Socket/fallback
; s& l& e. \7 j; C3 q; WDHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 3 (xid=0x21870d6a)
  Z# Z. u' g; I+ W( g( I8 lDHCPREQUEST of 171.10.91.128 on eth1 to 255.255.255.255 port 67 (xid=0x6a0d8721)
9 y2 t$ n; D5 k' ~DHCPOFFER of 171.10.91.128 from 171.10.91.254
% F5 F. d$ }) Q; aDHCPACK of 171.10.91.128 from 171.10.91.254
2 k; v+ S& b3 R& Wbound to 171.10.91.128 -- renewal in 899 seconds.( z2 _6 T  m1 O: N$ B
root@controller:~#
8 \& Q5 D( V& ?5 zroot@controller:~# ) m# @8 |7 l) M) W0 F) Z
root@controller:~#
% @9 L' o& x2 T: b9 broot@controller:~# ifup eth0( k; \: `5 j0 p/ O# J, L( k
ifup: interface eth0 already configured
# B# g" j: L5 C. e9 |) D: P6 c3 uroot@controller:~# ifup eth2% l; q" X% J- E4 Q0 H- ]
Internet Systems Consortium DHCP Client 4.2.48 s" L# f+ Q6 U; U* Q
Copyright 2004-2012 Internet Systems Consortium.; I( ?! c% H' N
All rights reserved.
7 X! y6 N4 }# RFor info, please visit https://www.isc.org/software/dhcp/8 L- s, g8 z6 k) W
Listening on LPF/eth2/00:0c:29:8c:59:a08 c+ A* `( R/ U* X4 l
Sending on   LPF/eth2/00:0c:29:8c:59:a0
0 ~7 v0 m* F2 h) ~# c$ p2 @5 CSending on   Socket/fallback  y7 N" P0 v, ^( |5 a
DHCPDISCOVER on eth2 to 255.255.255.255 port 67 interval 3 (xid=0x685a54b)
: a0 e7 T$ ?4 j4 H4 X, O- DDHCPREQUEST of 162.96.90.128 on eth2 to 255.255.255.255 port 67 (xid=0x4ba58506)
) t! ^( p. X  r$ k* {/ LDHCPOFFER of 162.96.90.128 from 162.96.90.254
2 r+ R. I2 e' j* o$ B+ K" r" bDHCPACK of 162.96.90.128 from 162.96.90.254
" E2 t8 y: Q0 d! |* tbound to 162.96.90.128 -- renewal in 823 seconds.! G/ i. d: L" B2 }+ H, o7 h! K
root@controller:~# ip addr3 `3 M& \9 B* o8 X+ T/ |
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
0 P: B% N5 r  G) x    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:005 p! s# u7 L5 l3 i7 U
    inet 127.0.0.1/8 scope host lo9 N# V5 m9 r$ x* V; U! M; i
       valid_lft forever preferred_lft forever
( k( L; B1 Z: P( [' n    inet6 ::1/128 scope host
0 \6 |2 r% E: i' z3 X# A% g       valid_lft forever preferred_lft forever
, v  v9 M# q; J- l& R0 A* B: b. s" D2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
: y2 J& b  b6 _- ]8 g    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff0 d! a9 i/ h3 L# {; G, X5 w3 o
    inet6 fe80::20c:29ff:fe8c:598c/64 scope link   Z7 X6 i* o  U2 @8 g" ^
       valid_lft forever preferred_lft forever$ o: C9 c: R$ o
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 10008 _$ f4 j, ?* ]  ^+ J: O  W
    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff* U4 s# Q8 y0 w# t+ @" a
    inet 171.10.91.128/24 brd 171.10.91.255 scope global eth1
) L4 D: K- w0 E5 r2 y       valid_lft forever preferred_lft forever
; I: @* ^  U( a! `: ~    inet6 fe80::20c:29ff:fe8c:5996/64 scope link
6 Y3 U1 U; w9 V       valid_lft forever preferred_lft forever3 N: C+ V' U: q# u
4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000% |" @$ Y2 u  }; b6 M- _
    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff% H! E( A" u% d1 v
    inet 162.96.90.128/24 brd 162.96.90.255 scope global eth2) U7 @1 W( A7 E2 f9 I) b
       valid_lft forever preferred_lft forever3 M& i& {8 B1 l# ^
    inet6 fe80::20c:29ff:fe8c:59a0/64 scope link
8 f$ ^2 j5 d7 q3 n3 A       valid_lft forever preferred_lft forever& l+ p! j5 V5 S0 R- |
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
9 X4 f/ C6 d7 \/ n* V) Q    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff# l" H8 g3 c0 a4 j5 d: U) |
    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth3
% ?8 W) d- W5 \* _/ @( M       valid_lft forever preferred_lft forever
$ l0 K/ _5 |# c4 u' c& }    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link
8 F! N5 ?! {. k0 Y       valid_lft forever preferred_lft forever+ ~+ m/ E7 k+ t- f) g
root@controller:~# reboot3 U# K4 w, x& s9 e1 z
root@controller:~#
- y6 F3 F- q7 h) J9 e: S0 W( F& j7 zBroadcast message from root@controller
9 V8 ]- m9 p+ E  C (/dev/pts/0) at 11:25 .... Z6 A) e1 g" A  y
The system is going down for reboot NOW!
: ?+ v9 P5 A3 j" |' @: q( w. w, l8 v0 y# a
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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：, a& W2 M5 F; a3 M8 |- |
  R) F/ I1 {+ L- n% \
# cat /etc/issue% b5 r1 h- W* v4 G$ y9 J
Ubuntu 14.04 LTS \n \l1 C1 a4 e$ G3 ~( F
# service  networking restart
8 K; G$ q8 x( B3 @4 U7 \$ ?stop: Job failed while stopping
  k( p. M: _8 n8 U$ X2 u$ }& Fstart: Job is already running: networking
+ C* }3 I# j  q  u7 O" y# ~1 e& Q# tail -f /var/log/upstart/networking.log
' V7 \: i: F: N$ iStopping or restarting the networking job is not supported.
4 g4 }) x" ^" H3 i1 l; PUse ifdown & ifup to reconfigure desired interface.) x7 X! I' T: \$ Z& m& K
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。
3 U; N" I) `# S: H
6 z+ {( E4 t# ]( x重启指定网卡3 x* Y8 h& o" U% T3 a' N1 m2 A
# ifdown eth0 && ifup eth0
7 R* j  H' Y6 X! J+ [. P重启除lo网卡的所有网卡
2 j( ^2 V" w9 S2 e' M! O4 E# ifdown --exclude=lo -a && sudo ifup --exclude=lo -a' K7 Z2 Q. L9 H9 S5 w) j; N
配置桥接+ p6 i  J2 m* E* O. q% r- T
# apt-get install bridge-utils  o/ n( b. Z4 U% z  \2 e
# cat /etc/network/interfaces
+ j2 T7 D+ n( j. B6 rauto lo
' n4 M9 ~0 G0 Tiface lo inet loopback
6 p( w  f4 F& ^6 y/ G' [3 p" }' K- N- {# c4 X
auto eth0
+ L* C" o9 x" _& y, v% I9 {iface eth0 inet manual! ~5 g" d! i: V; ~8 I5 P
1 M% R* V: g+ v- _- H  y5 y
auto br0
+ r' J2 C, ~2 _  p/ F* `- Wiface br0 inet static, {! n9 f2 G" F# k1 v
address 192.168.0.10+ [3 L# N; [" @: w1 o) g% C
netmask 255.255.255.0
" m# {6 F! E  G4 D% Ugateway 192.168.0.1% g" c# w+ e" [' p1 w/ T$ E+ h
bridge_ports eth00 K( \3 N) W( G$ q  @6 r. x; e
bridge_stp off# \& ~# [9 H6 H5 C, s
bridge_fd 0+ i/ u5 ]( e9 A5 G( u
bridge_maxwait 0! u6 `5 R& o, E9 k* J
dns-nameservers 192.168.0.1/ H6 O$ {/ @# X1 }, H/ E
# ifup br06 D  C( L6 ?# B5 K4 E
# brctl  show
1 b1 f# d. T6 sbridge name   bridge id       STP enabled interfaces' z$ \" e# |; S, I# d: `
br0       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
* N: ^6 _" Q# |- W: I. o$ aauto eth3
" O& \. y; x& y& Uiface eth3 inet static4 x( C3 @2 Y' P7 W
address 192.168.13.155
2 Z, @( v. G+ R8 [9 l' K3 ]- Inetmask 255.255.255.0
! I. n0 ~0 L1 e* Kgateway 192.168.13.22 \2 }# X" a' H" P4 B
dns-nameservers 114.114.114.114+ T8 E8 f8 ?% I! l' H

  ^0 r1 L, e3 ?* h保存退出，重新启动网卡：. c8 ?: |6 y5 y# ]
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" u( U+ R, D; `4 X% _* K9 h5 a
root@controller:~# ifdown eth1 eth2
" }: }9 m3 b& A% @  ]8 h) s9 Hroot@controller:~# ip addr, A! j6 f6 F- ?3 l2 y% J& w
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
* c6 ^. [) V. h6 M0 m# u, o! G3 ~1 M    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00* u, N% t, ?/ I, u& Q
    inet 127.0.0.1/8 scope host lo
) u; @8 i4 m$ l       valid_lft forever preferred_lft forever! z+ n/ I1 p4 c. u: Q
    inet6 ::1/128 scope host 7 L7 p/ ~! I5 L: I+ g( v
       valid_lft forever preferred_lft forever7 b# L9 _4 z' M( _. _4 i! K
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
# R2 i% _. z8 k' ?! v    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff
& W' I6 s6 W7 H  y4 _    inet6 fe80::20c:29ff:fe8c:598c/64 scope link
4 |3 T4 }1 J# X9 ^1 K8 Y       valid_lft forever preferred_lft forever
' P7 N( Q0 W9 ^! s7 y7 P- V3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000. w6 F9 ~! u7 g/ N
    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff' T( p7 V; K9 h# w$ k" M
4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
* M! D0 t9 Q) N8 p3 o% ^    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff
2 Y, A& X& i; _5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000) o# Q" r' H* h: C8 g
    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff* a0 q- s; }3 \
    inet 192.168.13.155/24 brd 192.168.13.255 scope global eth3) ^6 }* h5 T. R0 A! P
       valid_lft forever preferred_lft forever1 q0 B7 x1 ]7 [; Z, n9 C" b
    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link 2 ^  y8 R- B6 S1 V: {
       valid_lft forever preferred_lft forever
) i2 s$ n7 R7 W- Droot@controller:~# ifup  eth1 eth2
$ i4 \# r0 [! a# {/ b# \1 V  XError: an inet prefix is expected rather than "171.10.91.128/255.255.225.0".7 Y$ y" R; z+ T# O
Failed to bring up eth1.
, U/ j. Y0 S9 C/ N8 W( q: P! HError: an inet prefix is expected rather than "162.96.90.155/255.255.225.0".
8 d3 D* \$ S3 a1 I( FFailed to bring up eth2.
* @# ^/ O5 c" U8 L) r! A
0 s! @) j1 P6 A8 Q8 P2 mroot@controller:~# ifdown  eth1 eth2
% L5 C8 E9 t* V7 O. Droot@controller:~# ifup  eth1 eth2
: o! n5 F0 p# N' w6 qroot@controller:~# * g0 n& S6 x) m) e% z" u3 X

2 U+ \9 j- B  X' q
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