Hi VPP Maintainers,
It seems that adding static IPv6 routes using VPP CLI 'ip route add' has some
problems.
For example, like shown in the attached ipv6_cli.txt file, I add 4 static IPv6
routes using CLI 'ip route add 2001:1::0/128 count 4 via eth0', which returns 3
weird routes.
2001:1::/128
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:8 buckets:1 uRPF:7 to:[0:0]]
[0] [@3]: arp-ipv6: via 2001:1:: eth0
2001:1:0:1::/128
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:9 buckets:1 uRPF:8 to:[0:0]]
[0] [@4]: ipv6-glean: [src:2001:1:0:1::/128] eth0: mtu:9000 next:2 flags:[]
ffffffffffff6891d06246ac86dd
2001:1:0:2::/128
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:10 buckets:1 uRPF:9 to:[0:0]]
[0] [@4]: ipv6-glean: [src:2001:1:0:2::/128] eth0: mtu:9000 next:2 flags:[]
ffffffffffff6891d06246ac86dd
2001:1:0:3::/128
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:11 buckets:1 uRPF:10 to:[0:0]]
[0] [@4]: ipv6-glean: [src:2001:1:0:3::/128] eth0: mtu:9000 next:2 flags:[]
ffffffffffff6891d06246ac86dd
With some debugging, I find the logic of calculating IPv6 routes using VPP CLI
is probably wrong. I made a quick patch https://gerrit.fd.io/r/c/vpp/+/33422 to
resolve this issue.
Could you please take your time to double-confirm this issue and possibly help
review the patch?
Thanks,
Jieqiang Wang
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snowball@net-x86-dell-8268:~/tasks/vpp_debug$ sudo
./vpp/build-root/install-vpp-native/vpp/bin/vpp -c startup.conf
dpdk/cryptodev [warn ]: dpdk_cryptodev_init: Failed to configure
cryptodev
vat-plug/load [error ]: vat_plugin_register: lb plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: avf plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: ct6 plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: dns plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: mactime plugin not loaded...
vat-plug/load [error ]: pot_vat_plugin_register: pot plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: lacp plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: l2tp plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: lldp plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: builtinurl plugin not
loaded...
vat-plug/load [error ]: vat_plugin_register: nsim plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: af_xdp plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: vrrp plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: tls_openssl plugin not
loaded...
vat-plug/load [error ]: vat_plugin_register: vmxnet3 plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: cdp plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: stn plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: rdma plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: mdata plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: dhcp plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: pppoe plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: oddbuf plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: flowprobe plugin not
loaded...
vat-plug/load [error ]: vat_plugin_register: geneve plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: memif plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: arping plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: ikev2 plugin not loaded...
vat-plug/load [error ]: vat_plugin_register_gpe: lisp_gpe plugin not
loaded...
vat-plug/load [error ]: vat_plugin_register: acl plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: http_static plugin not
loaded...
vat-plug/load [error ]: vat_plugin_register: tracedump plugin not
loaded...
vat-plug/load [error ]: vat_plugin_register: adl plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: nsh plugin not loaded...
vat-plug/load [error ]: vat_plugin_register: gtpu plugin not loaded...
_______ _ _ _____ ___
__/ __/ _ \ (_)__ | | / / _ \/ _ \
_/ _// // / / / _ \ | |/ / ___/ ___/
/_/ /____(_)_/\___/ |___/_/ /_/
vpp# show int
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
eth0 1 down 9000/0/0/0
eth1 2 down 9000/0/0/0
local0 0 down 0/0/0/0
vpp# set int state eth0 up
vpp# set int state eth1 up
vpp#
vpp#
vpp# show ip6 fib
ipv6-VRF:0, fib_index:0, flow hash:[src dst sport dport proto flowlabel ]
epoch:0 flags:none locks:[default-route:1, ]
::/0
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:6 buckets:1 uRPF:5 to:[0:0]]
[0] [@0]: dpo-drop ip6
fe80::/10
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:7 buckets:1 uRPF:6 to:[0:0]]
[0] [@14]: ip6-link-local
vpp# ip route add 2001:1::0/128 count 4 via eth0
6.133327e3 routes/sec
vpp# show ip6 fib
ipv6-VRF:0, fib_index:0, flow hash:[src dst sport dport proto flowlabel ]
epoch:0 flags:none locks:[default-route:1, ]
::/0
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:6 buckets:1 uRPF:5 to:[0:0]]
[0] [@0]: dpo-drop ip6
2001:1::/128
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:8 buckets:1 uRPF:7 to:[0:0]]
[0] [@3]: arp-ipv6: via 2001:1:: eth0
2001:1:0:1::/128
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:9 buckets:1 uRPF:8 to:[0:0]]
[0] [@4]: ipv6-glean: [src:2001:1:0:1::/128] eth0: mtu:9000 next:2 flags:[]
ffffffffffff6891d06246ac86dd
2001:1:0:2::/128
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:10 buckets:1 uRPF:9 to:[0:0]]
[0] [@4]: ipv6-glean: [src:2001:1:0:2::/128] eth0: mtu:9000 next:2 flags:[]
ffffffffffff6891d06246ac86dd
2001:1:0:3::/128
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:11 buckets:1 uRPF:10 to:[0:0]]
[0] [@4]: ipv6-glean: [src:2001:1:0:3::/128] eth0: mtu:9000 next:2 flags:[]
ffffffffffff6891d06246ac86dd
fe80::/10
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:7 buckets:1 uRPF:6 to:[0:0]]
[0] [@14]: ip6-link-local
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