PING(8) iputils PING(8) ping - ICMP ping [-aAbBdCDfhHLnOqrRUvV346] [-c count] [-e identifier] [-F flowlabel] [-i interval] [-I interface] [-l preload] [-m mark] [-M pmtudisc_option] [-N nodeinfo_option] [-w deadline] [-W timeout] [-p pattern] [-Q tos] [-s packetsize] [-S sndbuf] [-t ttl] [-T timestamp option] [hop...] {destination} ping ECHO_REQUEST ICMP ECHO_RESPONSE . ECHO_REQUEST ("ping") IP ICMP timeval "" . ping IPv4 IPv6. -4 -6. ping IPv6 (RFC4620). IPv6 (RFC5095). -3 RTT ( ). -4 IPv4 . -6 IPv6 . -a ping . -A ping . ( ) . 2 -i. RTT . -b ping . -B ping . ping. -c count ECHO_REQUEST. ping ECHO_REPLY . -C connect() . -d SO_DEBUG . . -D ( + gettimeofday) . -e identifier ECHO_REQUEST. 0 ( ICMP). -v. -f ping . ECHO_REQUEST "." ECHO_REPLY . . . . -F flow label IPv6 . 20 ( ) . . -h . -H DNS . -f . DNS. -n . IPUTILS_PING_PTR_LOOKUP. -i interval . ( ). . 2 . : 1 . -I interface VRF. . . VRF -I . : IPv6 ping ( '%' ) . -l preload ping . 3. -L . ping . -m mark . . CAP_NET_ADMIN CAP_NET_RAW ( Linux 5.17) socket(7). -M pmtudisc_opt MTU . _pmtudisc do ( DF PMTU ) want ( PMTU ) probe ( DF PMTU ) dont ( DF). -N nodeinfo_option IPv6 . IPv6 (RFC4620) . CAP_NET_RAW. help NI. name . ipv6 IPv6. IPv6. ipv6-global IPv6 . ipv6-sitelocal IPv6 . ipv6-linklocal IPv6 . ipv6-all IPv6 . ipv4 IPv4. IPv4. ipv4-all IPv4 . subject-ipv6=ipv6addr IPv6. subject-ipv4=ipv4addr IPv4. subject-name=nodename . . subject-fqdn=nodename . . -n . ( ). -f. -H . IPUTILS_PING_PTR_LOOKUP. -O ICMP ECHO . -D . -p pattern 16 "" . . -p ff . -q . . -Q tos ICMP. tos (ping ) . RFC2474 (DS) 8 : 0-1 ( ) 2-7 ( 6 ) (DSCP). RFC2481 RFC3168 0-1 ECN. (RFC1349 RFC2474) : 0 ( ) ( ) 1-4 5-7 ( ) . -r . . -I . -R ping . . RECORD_ROUTE ECHO_REQUEST . IP . . -s _ . 56 64 ICMP 8 ICMP. 65507 IPv4 (65467 -R -T ) 65527 IPv6 . -S sndbuf sndbuf . . -t ttl ping . (TTL) IP. -T timestamp option IP. tsonly ( ) tsandaddr ( ) tsprespec 1 [2 [3 [4]]] ( ). -U ( ). ping DNS. -v . DUP . -V . -w deadline ping . ping . -W timeout . ping . ( ). 0 . ping . " " . . /// . (mdev) RTT ping RTT. mdev RTT ( ). RTT ( ACKs) VoIP . () SIGINT . SIGQUIT. . ping . IPUTILS_PING_PTR_LOOKUP 0 DNS ( PTR) . -H -n. ping 1. count deadline count deadline 1. 2. 0. . IPv6 IPv6 ping ICMP . ping . : o % % ifindex : ping fe80::5054:ff:fe70:67bc%eth0 ping fe80::5054:ff:fe70:67bc%2 o -I ICMP : 5.17 5.15.19 5.10.96 5.4.176 4.19.228 4.14.265. musl libc. ICMP IP 20 . ICMP ECHO_REQUEST 8 ICMP . packetsize ( 56). IP ICMP ECHO_REPLY 8 ( ICMP). struct timeval ping . . ping . . ( ) . ping ( ). TCP UDP ICMP (ID) . ping . 16 . ping. ping DIFFERENT ADDRESS . ping PID . /proc/sys/kernel/pid_max 32768. ping pid_max 65535 . () . . "" . ( ) . . . -p ping. TTL TTL IP IP . TTL . TTL TCP . 255 64. TCP/ RFC9293. ping TTL . ping TTL : o Berkeley Unix 4.3BSD Tahoe. TTL 255 . o 255 Berkeley Unix . TTL 255 ping. o . ICMP TCP 30 60. . o RECORD_ROUTE. o IP RECORD_ROUTE . . o ping ping . ip(8), ss(8). ping 4.3BSD. Linux. s20150815 ping6 . ping. ping6 ping . ping CAP_NET_RAW 1) ( -N) 0 ECHO_REQUEST ( -e) 2) ICMP 3) ICMP. set-uid. ping iputils. 3 . . : . iputils 20250605 PING(8)