socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
sendmmsg$inet6(r1, &(0x7f0000000980)=[{{0x0, 0x0, 0x0}}], 0x1, 0x0)
r2 = dup2(r0, r1)
ioctl$sock_TIOCINQ(r2, 0x541b, &(0x7f0000000000))