Hi Artem What is your use case. Do you want to ping from vpp1 to vpp2 via memif or ? *Regards*, Mrityunjay Kumar. Mobile: +91 - 9731528504
On Thu, Sep 16, 2021 at 4:55 PM Artem Glazychev <artem.glazyc...@xored.com> wrote: > Hello, > > I have a problem - unnumbered IPv6 interface is not working. > > *Configuration* > > For example, let's create memifs, one of them will be IPv6 unnumbered. > > *vpp1:* > > create interface memif id 0 master > set int ip address memif0/0 fc00::1/120 > set int state memif0/0 up > > *vpp2:* > > create loopback interface > set int ip address loop0 fc00::2/120 > set int state loop0 up > > create interface memif id 0 slave > set int unnumbered memif0/0 use loop0 > ip route add fc00::1/128 via memif0/0 > set int state memif0/0 up > trace add memif-input 10 > > If we look at the traces: > > Packet 1 > > 00:00:15:424691: memif-input > memif: hw_if_index 2 next-index 4 > slot: ring 0 > 00:00:15:435043: ethernet-input > IP6: 02:fe:1a:fa:94:43 -> 33:33:ff:00:00:02 > 00:00:15:435050: ip6-input > ICMP6: fc00::1 -> ff02::1:ff00:2 > tos 0x00, flow label 0x0, hop limit 255, payload length 32 > ICMP neighbor_solicitation checksum 0xcf5c > target address fc00::2 > 00:00:15:435055: ip6-mfib-forward-lookup > fib 0 entry 4 > 00:00:15:435057: ip6-mfib-forward-rpf > entry 4 itf -1 flags > 00:00:15:435063: ip6-drop > fib:0 adj:4 flow:0 > ICMP6: fc00::1 -> ff02::1:ff00:2 > tos 0x00, flow label 0x0, hop limit 255, payload length 32 > ICMP neighbor_solicitation checksum 0xcf5c > target address fc00::2 > 00:00:15:435070: error-drop > rx:memif0/0 > 00:00:15:435087: drop > ip6-input: drops due to concurrent reassemblies limit > > IPv6 sends packets to mcast node, but: > > DBGvpp# show mfib entry > FIB Entries: > 0@(*, 0.0.0.0/0): flags:Drop, > Interfaces: > multicast-ip4-chain > [@0]: dpo-drop ip4 > 1@(*, 224.0.0.1/32): > Interfaces: > multicast-ip4-chain > [@1]: dpo-replicate: [index:0 buckets:1 flags:[has-local ] to:[0:0]] > [0] [@1]: dpo-receive > 2@(*, 224.0.0.2/32): > Interfaces: > multicast-ip4-chain > [@1]: dpo-replicate: [index:1 buckets:1 flags:[has-local ] to:[0:0]] > [0] [@1]: dpo-receive > 3@(*, ::/0): flags:Drop, > Interfaces: > multicast-ip6-chain > [@0]: dpo-drop ip6 > 4@(*, ff02::1:ff00:0/104): > Interfaces: > loop0: Accept, > multicast-ip6-chain > [@1]: dpo-replicate: [index:2 buckets:1 flags:[has-local ] to:[0:0]] > [0] [@1]: dpo-receive > 5@(*, ff02::2/128): > Interfaces: > loop0: Accept, > multicast-ip6-chain > [@1]: dpo-replicate: [index:3 buckets:1 flags:[has-local ] to:[0:0]] > [0] [@1]: dpo-receive > 6@(*, ff02::1/128): > Interfaces: > loop0: Accept, > multicast-ip6-chain > [@1]: dpo-replicate: [index:4 buckets:1 flags:[has-local ] to:[4:288]] > [0] [@1]: dpo-receive > 7@(*, ff02::16/128): > Interfaces: > loop0: Accept, > multicast-ip6-chain > [@1]: dpo-replicate: [index:5 buckets:1 flags:[has-local ] to:[1:136]] > [0] [@1]: dpo-receive > > Entry 4 has *loop0* interface... > > Is there a way to make the configuration correct? > > > > > >
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