socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000007740)={<r0=>0xffffffffffffffff})
getsockname(r0, &(0x7f00000077c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @loopback}}}, &(0x7f0000007840)=0x80)