r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file1\x00', 0x105142, 0x0)
r1 = socket$inet6_tcp(0xa, 0x1, 0x0)
fcntl$setstatus(r1, 0x4, 0x42800)
connect$inet6(r1, &(0x7f0000000000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c)
dup2(r1, r0)
getsockopt$sock_buf(r0, 0x1, 0x1c, 0x0, &(0x7f0000000080))