Error: Conflicting default route declarations for IPv4 (table: main, metric: def

admin

Error: Conflicting default route declarations for IPv4 (table: main, metric: default), first declared in enp9s0 but also in vlan3
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网卡重启却能ping通外网
8 }1 {" ]4 T- cError: Conflicting default route declarations for IPv4 (table: main, metric: default)
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root@localhost:~# netplan apply
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" \( R  w- ^' p! r! V- D** (generate:62439): WARNING **: 07:58:24.498: `gateway4` has been deprecated, use default routes instead.
See the 'Default routes' section of the documentation for more details.

. z! F' `. F: Y; S8 A** (generate:62439): WARNING **: 07:58:24.498: `gateway4` has been deprecated, use default routes instead.
2 e/ r+ n4 M/ C& RSee the 'Default routes' section of the documentation for more details.
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** (generate:62439): WARNING **: 07:58:24.498: Problem encountered while validating default route consistency.Please set up multiple routing tables and use `routing-policy` instead.
3 k6 o( o' r$ cError: Conflicting default route declarations for IPv4 (table: main, metric: default), first declared in enp9s0 but also in vlan3

** (process:62437): WARNING **: 07:58:24.812: `gateway4` has been deprecated, use default routes instead.
- G+ g/ T0 o4 L: KSee the 'Default routes' section of the documentation for more details.

" l) A; Y+ a/ ^7 w$ i** (process:62437): WARNING **: 07:58:24.812: `gateway4` has been deprecated, use default routes instead.
% Z7 r. n; w) |- vSee the 'Default routes' section of the documentation for more details.

8 ^. A0 b! \- e** (process:62437): WARNING **: 07:58:24.812: Problem encountered while validating default route consistency.Please set up multiple routing tables and use `routing-policy` instead.
Error: Conflicting default route declarations for IPv4 (table: main, metric: default), first declared in enp9s0 but also in vlan3
  e  n6 D7 `( V
** (process:62437): WARNING **: 07:58:24.822: `gateway4` has been deprecated, use default routes instead.
, A, [. `, q! U. ySee the 'Default routes' section of the documentation for more details.
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0 ]6 i" R! r* V9 h, [** (process:62437): WARNING **: 07:58:24.822: `gateway4` has been deprecated, use default routes instead.
& r3 t( a; S4 {0 N6 a) o/ OSee the 'Default routes' section of the documentation for more details.

: Q+ A6 e+ o3 `4 ?. O8 ^" J  E& {** (process:62437): WARNING **: 07:58:24.822: Problem encountered while validating default route consistency.Please set up multiple routing tables and use `routing-policy` instead.
+ C  ]& }; {" C1 P- xError: Conflicting default route declarations for IPv4 (table: main, metric: default), first declared in enp9s0 but also in vlan3

** (process:62437): WARNING **: 07:58:25.134: `gateway4` has been deprecated, use default routes instead.
See the 'Default routes' section of the documentation for more details.
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** (process:62437): WARNING **: 07:58:25.134: `gateway4` has been deprecated, use default routes instead.
See the 'Default routes' section of the documentation for more details.

% `/ S: ~. t. `/ C7 h** (process:62437): WARNING **: 07:58:25.134: Problem encountered while validating default route consistency.Please set up multiple routing tables and use `routing-policy` instead.
" ^7 e: T& e* @5 c  PError: Conflicting default route declarations for IPv4 (table: main, metric: default), first declared in enp9s0 but also in vlan3
, j. P- a3 c! a
; T; f' M$ T' N** (process:62437): WARNING **: 07:58:25.134: `gateway4` has been deprecated, use default routes instead.
See the 'Default routes' section of the documentation for more details.
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% u) K4 z8 B* H% R* B/ F. F! N5 H8 P** (process:62437): WARNING **: 07:58:25.134: `gateway4` has been deprecated, use default routes instead.
See the 'Default routes' section of the documentation for more details.

, E7 n: m$ F) d% V6 L7 t& n** (process:62437): WARNING **: 07:58:25.135: Problem encountered while validating default route consistency.Please set up multiple routing tables and use `routing-policy` instead.
Error: Conflicting default route declarations for IPv4 (table: main, metric: default), first declared in enp9s0 but also in vlan3
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admin

但是 $ sudo netplan apply 出现警告和报错
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** (generate:2624): WARNING **: 02:29:33.628: Problem encountered while validating default route consistency.Please set up multiple routing tables and use `routing-policy` instead.
Error: Conflicting default route declarations for IPv4 (table: main, metric: 100), first declared in enp0s8 but also in enp0s3

% V4 {8 |8 n* m0 |, i5 N8 Y ** (process:2622): WARNING **: 02:29:34.210: Problem encountered while validating default route consistency.Please set up multiple routing tables and use `routing-policy` instead.
: t% o7 t, A: t0 \ Error: Conflicting default route declarations for IPv4 (table: main, metric: 100), first declared in enp0s8 but also in enp0s3
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% m3 ]' T1 @3 f, f$ ip route list

4 x  }. y. p# a, U default via 192.168.0.1 dev enp0s8 proto static metric 100
default via 12.34.56.1 dev enp0s3 proto static metric 100
: U7 A! E7 `- [  G# }) U1 j: r 192.168.0.0/24 dev enp0s8 proto kernel scope link src 192.168.0.5
) r7 f' _: i' A8 A; i# F  j! }) P5 d 12.34.560/28 dev enp0s3 proto kernel scope link src 12.34.56.78

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! c! x+ x: y3 A# F% S1 i9 l4 X会发现确实出现 2 个 default

7 u; }6 s# S% d5 `当时在实际环境，着急使用，所以，简单删除了内网的route，可以正常使用了
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9 x5 B+ \8 u) q- L: _/ o$ sudo ip route del 192.168.0.1
其实只是改变了 2 个 default 的次序
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今天重新思考并测试：
既然外网已经有网关，那么，服务器访问外网不会有问题
内网访问其他资源，应该仅限于内网区域，所以，修改他的 to 就应该可以了！
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$ cat 00-installer-config.yaml
修改一下即可
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9 q2 g# Y6 t& }' `$ H+ q* o- u   routes:
% @0 v6 z* h. m0 z0 B5 c     - to: 192.168.0.0/24 # 0.0.0.0/0
       via: 192.168.0.1
       metric: 100


1 ]( {4 @5 n" M" f) \再次 $ sudo netplan apply 不再报错和警告
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$ ip route list

default via 12.34.1 dev enp0s8 proto static metric 100
% S* n, \, t( B' _, g: v4 [: ?5 q 192.168.0.0/24 dev enp0s3 proto kernel scope link src 192.168.0.5
192.168.0.0/24 via 192.168.0.81 dev enp0s3 proto static metric 100
8 i  Y$ W9 w! f( _) @ 12.34.56.0/28 dev enp0s8 proto kernel scope link src 12.34.56.78
% }  }" J$ b9 B5 w' d/ o5 v- M

1 B0 A) m% k8 u6 F6 v现在只有一个 default 了
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其他
' i: v  @( ?) E+ w  [安装设置虚拟机时，特意将外网卡放在前面，但是，不知道为什么，他竟然网卡名字对应反了，结果，apt update 时报错，ping 外网死活不通！
改正过来就好了！

admin

解决方法：
+ V% |" C& b! V0 D' lnetplan apply会根据gateway4生成默认路由，保留一个gateway4即可