Changes to route(8) or routing between r325235 and r326782?

[Eugene Grosbein]

On 13.12.2017 03:21, Rodney W. Grimes wrote:

> Flap your intgerfaces and see what happens when quagga and the kernel fight
> over who gets to install the local MTU route via lo of the ip address for
> the interface you flapped.

I do not see any problem here. After service quagga restart:

# egrep 'zebra|ospfd' /var/log/messages
Dec 14 13:48:43 ptic zebra[96288]: Zebra 1.2.1 starting: vty at 2601
...
Dec 14 13:48:46 ptic ospfd[96297]: AdjChg: Nbr 192.168.7.1 on gif0:192.168.100.234: Loading -> Full (LoadingDone)
Dec 14 13:48:46 ptic ospfd[96297]: AdjChg: Nbr 192.168.7.1 on gif1:192.168.100.134: Loading -> Full (LoadingDone)

# ifconfig gif1 down
# ifconfig gif1 up

This adds to /var/log/messages:

Dec 14 13:49:01 ptic ospfd[96297]: AdjChg: Nbr 192.168.7.1 on gif1:192.168.100.134: Full -> Deleted (KillNbr)
Dec 14 13:49:01 ptic zebra[96288]: if_ioctl(SIOCGIFMEDIA) failed: Invalid argument
Dec 14 13:49:01 ptic zebra[96288]: kernel_rtm_ipv4: 192.168.100.132/30: rtm_write() unexpectedly returned -4 for command RTM_DELETE
Dec 14 13:49:04 ptic zebra[96288]: if_ioctl(SIOCGIFMEDIA) failed: Invalid argument
Dec 14 13:49:04 ptic ospfd[96297]: OSPF MPLS-TE: Abort update TE parameters: no Link Parameters for interface
Dec 14 13:49:06 ptic ospfd[96297]: AdjChg: Nbr 192.168.7.1 on gif1:192.168.100.134: Exchange -> Full (ExchangeDone)

There is no fight. Why don't you describe *your* setup in a PR so we could handle it right way?
Perhaps, we could add another sysctl to disable route pinning if it really unavoidable for such setups.