socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
getsockopt$IP_SET_OP_VERSION(r0, 0x1, 0x53, &(0x7f0000000000), &(0x7f0000000080)=0xffffffb1)