r0 = socket$netlink(0x10, 0x3, 0x0)
r1 = fcntl$dupfd(r0, 0x0, r0)
sendmsg$nl_generic(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000580)={0x3c, 0x20, 0xc21, 0x0, 0x0, {0x2}, [@typed={0x8, 0x0, 0x0, 0x0, @u32}, @typed={0x20, 0xc, 0x0, 0x0, @str='/proc/sys/net/ipv4/tcp_rmem\x00'}]}, 0x3c}}, 0x0)