r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x1e, &(0x7f0000000280)=0x1, 0x4)
sendmsg$inet6(r0, &(0x7f00000001c0)={&(0x7f0000000080)={0xa, 0x0, 0x0, @loopback={0x0, 0x7ffff000}}, 0x1c, 0x0}, 0x20000040)