cilium / cilium / 10532
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coverage: 44.001% (-0.03%) from 44.032%
10532

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borkmann 
bpf: fix routing of cilium_host router ip and health in v6 tunnel mode

Even though the v4 cilium_host as well as health IPs are properly set up
with 192.168.1.120 as tunnel endpoint as well as remote v4+v6 pod addresses,
the cilium_host router IP is not and therefore attempted to be routed
publicly which is incorrect. Same for health by the way. Noticed as BPF
based nodeport replies in v6 via tunnel to cilium_host were correctly
NATed but routed via public interface instead of cilium_vxlan:

Tunnel map:

  # ./cilium/cilium bpf tunnel list
  TUNNEL           VALUE
  10.21.0.0:0      192.168.1.120:0
  2001:db1:3:::0   192.168.1.120:0

Before:

  # ./cilium/cilium bpf ipcache list
  IP PREFIX/ADDRESS                            IDENTITY
  2001:db1:3::c8a4/128                         4 0 0.0.0.0                <-- Remote node's health IPv6 (BUG: no tunnel entry)
  fe80::3090:86ff:fe32:2e11/128                1 0 0.0.0.0
  10.11.39.69/32                               1 0 0.0.0.0
  10.11.118.73/32                              4 0 0.0.0.0
  10.21.251.113/32                             1 0 192.168.1.120          <-- Remote node's cilium_host IPv4
  192.168.1.125/32                             1 0 0.0.0.0
  2001:db1:3::f9a/128                          16777217 0 192.168.1.120   <-- Remote pod IPv6 address
  2001:db1:3::6e04/128                         1 0 0.0.0.0                <-- Remote node's cilium_host [router] IPv6 (BUG: no tunnel entry)
  ::/0                                         2 0 0.0.0.0
  2001:db8:5::9c23/128                         4 0 0.0.0.0
  2a02:120b:2c12:c120:ec4:7aff:fe03:f925/128   1 0 0.0.0.0
  10.21.157.26/32                              16777217 0 192.168.1.120   <-- Remote pod IPv4 address
  10.21.184.75/32                              4 0 192.168.1.120          <-- Remote node's health IPv4
  0.0.0.0/0                                    2 0 0.0.0.0
  2001:db8:5::a36a/128                         1 0 0.0.0.0

After:

  # ./cilium/ci... (continued)

25461 of 57864 relevant lines covered (44.0%)

1163.81 hits per line

Jobs
ID Job ID Ran Files Coverage
1 10532.1 0
44.0
 Travis Job 10532.1
Source Files on build 10532
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