# strace ipvsadm --start-daemon master --syncid 1 execve("/sbin/ipvsadm", ["ipvsadm", "--start-daemon", "master", "--syncid", "1"], [/* 18 vars */]) = 0 brk(0) = 0x96f6000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b2f87e63000 uname({sys="Linux", node="my.supersecret.host.local", ...}) = 0 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=25364, ...}) = 0 mmap(NULL, 25364, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2b2f87e64000 close(3) = 0 open("/lib64/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p\332\241\2278\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1713160, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b2f87e6b000 mmap(0x3897a00000, 3494168, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3897a00000 mprotect(0x3897b4c000, 2097152, PROT_NONE) = 0 mmap(0x3897d4c000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x14c000) = 0x3897d4c000 mmap(0x3897d51000, 16664, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3897d51000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b2f87e6c000 arch_prctl(ARCH_SET_FS, 0x2b2f87e6c220) = 0 mprotect(0x3897d4c000, 16384, PROT_READ) = 0 mprotect(0x389781b000, 4096, PROT_READ) = 0 munmap(0x2b2f87e64000, 25364) = 0 socket(PF_INET, SOCK_RAW, IPPROTO_RAW) = 3 getsockopt(3, SOL_IP, 0x481 /* IP_??? */, "\1\2\1\0\0\20\0\0\5\0\0\0", [12]) = 0 write(2, "Illegal 'syncid' option with the"..., 55Illegal 'syncid' option with the 'start-daemon' command) = 55 write(2, "\n", 1 ) = 1 exit_group(2) = ?