Eaton:/home/eaton # systemctl stop nscd
Eaton:/home/eaton # systemctl restart NetworkManager
Eaton:/home/eaton # strace ping baidu.com
execve("/bin/ping", ["ping", "baidu.com"], 0x7ffe2e7f13d8 /* 96 vars */) = 0
brk(NULL)                               = 0x564cdd133000
arch_prctl(0x3001 /* ARCH_??? */, 0x7ffed76de5a0) = -1 EINVAL (无效的参数)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffbcf0e2000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (没有那个文件或目录)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=125411, ...}) = 0
mmap(NULL, 125411, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf0c3000
close(3)                                = 0
openat(AT_FDCWD, "/lib64/libcap.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@x\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=47256, ...}) = 0
mmap(NULL, 45128, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7ffbcf0b7000
mmap(0x7ffbcf0ba000, 20480, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7ffbcf0ba000
mmap(0x7ffbcf0bf000, 8192, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8000) = 0x7ffbcf0bf000
mmap(0x7ffbcf0c1000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa000) = 0x7ffbcf0c1000
close(3)                                = 0
openat(AT_FDCWD, "/lib64/libidn2.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=133160, ...}) = 0
mmap(NULL, 135184, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7ffbcf095000
mmap(0x7ffbcf097000, 16384, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7ffbcf097000
mmap(0x7ffbcf09b000, 106496, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7ffbcf09b000
mmap(0x7ffbcf0b5000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1f000) = 0x7ffbcf0b5000
close(3)                                = 0
openat(AT_FDCWD, "/lib64/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\276\203\2\0\0\0\0\0"..., 832) = 832
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784
fstat(3, {st_mode=S_IFREG|0755, st_size=2368112, ...}) = 0
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784
mmap(NULL, 2098288, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7ffbcee00000
mmap(0x7ffbcee26000, 1490944, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x26000) = 0x7ffbcee26000
mmap(0x7ffbcef92000, 348160, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x192000) = 0x7ffbcef92000
mmap(0x7ffbcefe7000, 49152, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1e6000) = 0x7ffbcefe7000
mmap(0x7ffbceff3000, 54384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7ffbceff3000
close(3)                                = 0
openat(AT_FDCWD, "/lib64/libunistring.so.5", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1767568, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffbcf093000
mmap(NULL, 1767656, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7ffbcec50000
mmap(0x7ffbcec63000, 225280, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13000) = 0x7ffbcec63000
mmap(0x7ffbcec9a000, 1445888, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4a000) = 0x7ffbcec9a000
mmap(0x7ffbcedfb000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1ab000) = 0x7ffbcedfb000
close(3)                                = 0
mmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffbcf090000
arch_prctl(ARCH_SET_FS, 0x7ffbcf090740) = 0
set_tid_address(0x7ffbcf090a10)         = 28213
set_robust_list(0x7ffbcf090a20, 24)     = 0
rseq(0x7ffbcf091060, 0x20, 0, 0x53053053) = 0
mprotect(0x7ffbcefe7000, 16384, PROT_READ) = 0
mprotect(0x7ffbcedfb000, 16384, PROT_READ) = 0
mprotect(0x7ffbcf0b5000, 4096, PROT_READ) = 0
mprotect(0x7ffbcf0c1000, 4096, PROT_READ) = 0
mprotect(0x564cdbca7000, 4096, PROT_READ) = 0
mprotect(0x7ffbcf116000, 8192, PROT_READ) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
munmap(0x7ffbcf0c3000, 125411)          = 0
prctl(PR_CAPBSET_READ, CAP_MAC_OVERRIDE) = 1
prctl(PR_CAPBSET_READ, 0x30 /* CAP_??? */) = -1 EINVAL (无效的参数)
prctl(PR_CAPBSET_READ, CAP_CHECKPOINT_RESTORE) = 1
prctl(PR_CAPBSET_READ, 0x2c /* CAP_??? */) = -1 EINVAL (无效的参数)
prctl(PR_CAPBSET_READ, 0x2a /* CAP_??? */) = -1 EINVAL (无效的参数)
prctl(PR_CAPBSET_READ, 0x29 /* CAP_??? */) = -1 EINVAL (无效的参数)
getrandom("\x80\x86\xab\xfd\x77\x58\xe5\x35", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x564cdd133000
brk(0x564cdd154000)                     = 0x564cdd154000
capget({version=_LINUX_CAPABILITY_VERSION_3, pid=0}, NULL) = 0
capget({version=_LINUX_CAPABILITY_VERSION_3, pid=0}, {effective=1<<CAP_SETUID|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_RAW, permitted=1<<CAP_SETUID|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_RAW, inheritable=1<<CAP_WAKE_ALARM}) = 0
capget({version=_LINUX_CAPABILITY_VERSION_3, pid=0}, NULL) = 0
capset({version=_LINUX_CAPABILITY_VERSION_3, pid=0}, {effective=0, permitted=1<<CAP_NET_RAW, inheritable=0}) = 0
prctl(PR_SET_KEEPCAPS, 1)               = 0
getuid()                                = 0
setuid(0)                               = 0
prctl(PR_SET_KEEPCAPS, 0)               = 0
getuid()                                = 0
openat(AT_FDCWD, "/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = -1 ENOENT (没有那个文件或目录)
openat(AT_FDCWD, "/usr/share/locale/locale.alias", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2940, ...}) = 0
read(3, "# Locale name alias data base.\n#"..., 4096) = 2940
read(3, "", 4096)                       = 0
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_IDENTIFICATION", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=306, ...}) = 0
mmap(NULL, 306, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf0e1000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib64/gconv/gconv-modules.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=27012, ...}) = 0
mmap(NULL, 27012, PROT_READ, MAP_SHARED, 3, 0) = 0x7ffbcf0da000
close(3)                                = 0
futex(0x7ffbceff2dec, FUTEX_WAKE_PRIVATE, 2147483647) = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_MEASUREMENT", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=23, ...}) = 0
mmap(NULL, 23, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf0d9000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_TELEPHONE", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=57, ...}) = 0
mmap(NULL, 57, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf0d8000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_ADDRESS", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=162, ...}) = 0
mmap(NULL, 162, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf0d7000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_NAME", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=82, ...}) = 0
mmap(NULL, 82, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf0d6000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_PAPER", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=34, ...}) = 0
mmap(NULL, 34, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf0d5000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_MESSAGES", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFDIR|0755, st_size=30, ...}) = 0
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_MESSAGES/SYS_LC_MESSAGES", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=82, ...}) = 0
mmap(NULL, 82, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf0d4000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_MONETARY", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=290, ...}) = 0
mmap(NULL, 290, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf0d3000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_COLLATE", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2801698, ...}) = 0
mmap(NULL, 2801698, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbce800000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_TIME", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2868, ...}) = 0
mmap(NULL, 2868, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf0d2000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_NUMERIC", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=54, ...}) = 0
mmap(NULL, 54, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf0d1000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/locale/zh_CN.utf8/LC_CTYPE", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=358416, ...}) = 0
mmap(NULL, 358416, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffbcf038000
close(3)                                = 0
getrandom("\xfa\xba\x99\xe5", 4, GRND_NONBLOCK) = 4
capget({version=_LINUX_CAPABILITY_VERSION_3, pid=0}, NULL) = 0
capget({version=_LINUX_CAPABILITY_VERSION_3, pid=0}, {effective=0, permitted=1<<CAP_NET_RAW, inheritable=0}) = 0
capset({version=_LINUX_CAPABILITY_VERSION_3, pid=0}, {effective=1<<CAP_NET_RAW, permitted=1<<CAP_NET_RAW, inheritable=0}) = 0
socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP) = 3
socket(AF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6) = 4
capget({version=_LINUX_CAPABILITY_VERSION_3, pid=0}, NULL) = 0
capget({version=_LINUX_CAPABILITY_VERSION_3, pid=0}, {effective=1<<CAP_NET_RAW, permitted=1<<CAP_NET_RAW, inheritable=0}) = 0
capset({version=_LINUX_CAPABILITY_VERSION_3, pid=0}, {effective=0, permitted=1<<CAP_NET_RAW, inheritable=0}) = 0
socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 5
connect(5, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = -1 ECONNREFUSED (拒绝连接)
close(5)                                = 0
socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 5
connect(5, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = -1 ECONNREFUSED (拒绝连接)
close(5)                                = 0
newfstatat(AT_FDCWD, "/etc/nsswitch.conf", {st_mode=S_IFREG|0644, st_size=2221, ...}, 0) = 0
newfstatat(AT_FDCWD, "/", {st_mode=S_IFDIR|0755, st_size=142, ...}, 0) = 0
openat(AT_FDCWD, "/etc/nsswitch.conf", O_RDONLY|O_CLOEXEC) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=2221, ...}) = 0
read(5, "#\n# /etc/nsswitch.conf\n#\n# An ex"..., 4096) = 2221
read(5, "", 4096)                       = 0
fstat(5, {st_mode=S_IFREG|0644, st_size=2221, ...}) = 0
close(5)                                = 0
newfstatat(AT_FDCWD, "/etc/resolv.conf", {st_mode=S_IFREG|0644, st_size=98, ...}, 0) = 0
openat(AT_FDCWD, "/etc/host.conf", O_RDONLY|O_CLOEXEC) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=127, ...}) = 0
read(5, "#\n# /etc/host.conf - resolver co"..., 4096) = 127
read(5, "", 4096)                       = 0
close(5)                                = 0
futex(0x7ffbceffa92c, FUTEX_WAKE_PRIVATE, 2147483647) = 0
openat(AT_FDCWD, "/etc/resolv.conf", O_RDONLY|O_CLOEXEC) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=98, ...}) = 0
read(5, "# Generated by NetworkManager\nna"..., 4096) = 98
socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 6
ioctl(6, SIOCGIFINDEX, {ifr_name="wlp2s0", ifr_ifindex=2}) = 0
close(6)                                = 0
read(5, "", 4096)                       = 0
uname({sysname="Linux", nodename="Eaton", ...}) = 0
fstat(5, {st_mode=S_IFREG|0644, st_size=98, ...}) = 0
close(5)                                = 0
openat(AT_FDCWD, "/usr/share/locale-langpack/zh_CN.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (没有那个文件或目录)
openat(AT_FDCWD, "/usr/share/locale/zh_CN.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (没有那个文件或目录)
openat(AT_FDCWD, "/usr/share/locale-langpack/zh_CN/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (没有那个文件或目录)
openat(AT_FDCWD, "/usr/share/locale/zh_CN/LC_MESSAGES/libc.mo", O_RDONLY) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=130903, ...}) = 0
mmap(NULL, 130903, PROT_READ, MAP_PRIVATE, 5, 0) = 0x7ffbcf018000
close(5)                                = 0
write(2, "ping: ", 6ping: )                   = 6
write(2, "baidu.com: \347\263\273\347\273\237\351\224\231\350\257\257", 23baidu.com: 系统错误) = 23
write(2, "\n", 1
)                       = 1
close(1)                                = 0
close(2)                                = 0
exit_group(2)                           = ?
+++ exited with 2 +++