IPV6 tests always meet runtime error in bind call

[liuyd96]

Hi, all.
Recently i test packetdrill by "packetdrill/run_all.py -L -l -v tcp" on Debian 9. kernel v5.5
I always meet runtime error in bind call.
This error is unstable, run 10times, appear 7times.

liuyd@inn:/result/packetdrill/defaults/lkp-ivb-2ep1/debian-x86_64-20191114.cgz/x86_64-rhel-7.6/gcc-7/v5.5$ grep "bind call" */stderr | sort -n
0/stderr:no-coalesce-small.pkt:9: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
0/stderr:reset_tsval.pkt:10: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
0/stderr:small.pkt:11: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
1/stderr:user_timeout.pkt:6: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
3/stderr:ioctl-siocinq-fin.pkt:9: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
3/stderr:sack-shift-sacked-7-3-4-8-9-fack.pkt:10: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
3/stderr:syscall-invalid-buf-ptr.pkt:8: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
4/stderr:user_timeout.pkt:6: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
7/stderr:server.pkt:8: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
9/stderr:batch.pkt:10: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
9/stderr:sendfile-simple.pkt:14: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
9/stderr:shutdown-rdwr-write-queue-close.pkt:12: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
9/stderr:user-timeout-probe.pkt:6: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
10/stderr:epoll_edge.pkt:14: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
10/stderr:sack-shift-sacked-2-6-8-3-9-nofack.pkt:12: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)

Only IPV6 tests failed due to this error.
Take rt 0 as an example. no-coalesce-small reset_tsval small tests meet bind call error.

0/stderr:no-coalesce-small.pkt:9: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
0/stderr:reset_tsval.pkt:10: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
0/stderr:small.pkt:11: runtime error in bind call: Expected result 0 but got -1 with errno 99 (Cannot assign requested address)
liuyd@inn:/result/packetdrill/defaults/lkp-ivb-2ep1/debian-x86_64-20191114.cgz/x86_64-rhel-7.6/gcc-7/v5.5/0$ cat packetdrill | grep -E "reset_tsval|no-coalesce-small|small"
FAIL [/lkp/benchmarks/packetdrill/gtests/net/tcp/ts_recent/reset_tsval.pkt (ipv6)]
OK [/lkp/benchmarks/packetdrill/gtests/net/tcp/eor/no-coalesce-small.pkt (ipv4)]
FAIL [/lkp/benchmarks/packetdrill/gtests/net/tcp/eor/no-coalesce-small.pkt (ipv6)]
FAIL [/lkp/benchmarks/packetdrill/gtests/net/tcp/zerocopy/small.pkt (ipv6)]
OK [/lkp/benchmarks/packetdrill/gtests/net/tcp/eor/no-coalesce-small.pkt (ipv4-mapped-v6)]
OK [/lkp/benchmarks/packetdrill/gtests/net/tcp/ts_recent/reset_tsval.pkt (ipv4-mapped-v6)]
OK [/lkp/benchmarks/packetdrill/gtests/net/tcp/zerocopy/small.pkt (ipv4-mapped-v6)]
OK [/lkp/benchmarks/packetdrill/gtests/net/tcp/ts_recent/reset_tsval.pkt (ipv4)]
OK [/lkp/benchmarks/packetdrill/gtests/net/tcp/zerocopy/small.pkt (ipv4)]