r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty}, 0x1c)
r1 = fcntl$dupfd(r0, 0x0, r0)
sendmmsg$inet6(r1, &(0x7f0000005940)=[{{0x0, 0x0, 0x0}}], 0x1, 0x8040)