Apparently the fix breaks IPv4 support on kernels where v6 is
disabled. The resulting code does wrong thing:
socket(PF_INET6, SOCK_STREAM, IPPROTO_TCP) = -1 EAFNOSUPPORT (Address family
not supported by protocol)
socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 5
fcntl64(5, F_SETFL, O_RDONLY|O_NONBLOCK) = 0
setsockopt(5, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
bind(5, {sa_family=AF_INET6, sin6_port=htons(6974), inet_pton(AF_INET6, "::",
&sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EAFNOSUPPORT
bind(5, {sa_family=AF_INET6, sin6_port=htons(6975), inet_pton(AF_INET6, "::",
&sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EAFNOSUPPORT
bind(5, {sa_family=AF_INET6, sin6_port=htons(6976), inet_pton(AF_INET6, "::",
&sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EAFNOSUPPORT
bind(5, {sa_family=AF_INET6, sin6_port=htons(6977), inet_pton(AF_INET6, "::",
&sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EAFNOSUPPORT
bind(5, {sa_family=AF_INET6, sin6_port=htons(6978), inet_pton(AF_INET6, "::",
&sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EAFNOSUPPORT
bind(5, {sa_family=AF_INET6, sin6_port=htons(6979), inet_pton(AF_INET6, "::",
&sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EAFNOSUPPORT
bind(5, {sa_family=AF_INET6, sin6_port=htons(6980), inet_pton(AF_INET6, "::",
&sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EAFNOSUPPORT
bind(5, {sa_family=AF_INET6, sin6_port=htons(6981), inet_pton(AF_INET6, "::",
&sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EAFNOSUPPORT
....
Or, on older kernel:
socket(PF_INET6, SOCK_STREAM, IPPROTO_TCP) = -1 EAFNOSUPPORT (Address family
not supported by protocol)
socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 5
fcntl64(5, F_SETFL, O_RDONLY|O_NONBLOCK) = 0
setsockopt(5, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
bind(5, {sa_family=AF_INET6, sin6_port=htons(38424), inet_pton(AF_INET6, "::",
&sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EINVAL (Invalid
argument)
Which is, obviosly, plain wrong.
So this change, IMHO, makes more bad than good.
I had to revert this patch in local package in order
to make it actually work with v6 disabled on the system.
Thanks,
/mjt
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