>> Out of interest, if you change it back to a /31 and flush the session does the issue come back?
Yes, issue comes back as soon as I switch to /31 mask
>> Can this be flagged as a bug in the OS?
I've tested with 1.7.0 firmware and it works as expected there:
root@saul:~# show version |head -n 1 Version: v1.7.0 root@saul:~# show ip route |grep 6.0 B>* 77.77.6.0/27 [20/0] via 77.77.6.1, eth2.77, 00:08:21 C>* 77.77.6.0/31 is directly connected, eth2.77
Looks like this is a regression that first appeared in 1.8.0 release. I will create a bug ticket for this issue, thank you for reporting.