r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
bind$inet6(r0, &(0x7f0000000140)={0xa, 0x4e20, 0x0, @ipv4={'\x00', '\xff\xff', @empty}}, 0x1c)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20, 0x0, @empty}, 0x1c)
setsockopt$inet6_tcp_int(0xffffffffffffffff, 0x6, 0x0, 0x0, 0x0)
pread64(0xffffffffffffffff, 0x0, 0x0, 0x0)
pipe2$9p(0x0, 0x0)
sendmsg$inet6(r0, &(0x7f00000006c0)={0x0, 0x0, &(0x7f0000000540)=[{&(0x7f0000000100)=':\x00', 0x2}], 0x1}, 0x1004c800)
setsockopt$inet6_tcp_int(r0, 0x6, 0x1, &(0x7f0000000340)=0x7fffffff, 0x4)