Why ping6 doesn't work on my Android dev?
ping6 on the Android dev.
bullhead:/ # ping6 fe80::405a:e0a5:e054:cbde
connect: Invalid argument
2|bullhead:/ # ping6 -I wlan0 fe80::405a:e0a5:e054:cbde
PING fe80::405a:e0a5:e054:cbde(fe80::405a:e0a5:e054:cbde) from fe80::7af8:82ff:fea2:3210 wlan0: 56 data bytes
ping: sendmsg: Invalid argument
^C
--- fe80::405a:e0a5:e054:cbde ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms
1|bullhead:/ # ping6 -I wlan0 fe80::405a:e0a5:e054:cbde@20
unknown host
ifconfig on the Android dev.
wlan0 Link encap:Ethernet HWaddr 78:f8:82:a2:32:10
inet addr:192.168.0.101 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::7af8:82ff:fea2:3210/64 Scope: Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5174 errors:0 dropped:0 overruns:0 frame:0
TX packets:2951 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3000
RX bytes:1883684 TX bytes:628725
ifconfig on my desktop.
wlp8s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.105 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 fe80::405a:e0a5:e054:cbde prefixlen 64 scopeid 0x20<link>
ether 30:52:cb:6d:b1:2f txqueuelen 1000 (Ethernet)
RX packets 681081 bytes 913125757 (913.1 MB)
RX errors 0 dropped 1 overruns 0 frame 0
TX packets 375064 bytes 49389468 (49.3 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ping6 fe80::7af8:82ff:fea2:3210 on my desktop.
andrey@andrey-Lenovo-ideapad-Y700-17ISK:~$ ping6 fe80::7af8:82ff:fea2:3210
PING fe80::7af8:82ff:fea2:3210(fe80::7af8:82ff:fea2:3210) 56 data bytes
64 bytes from fe80::7af8:82ff:fea2:3210%wlp8s0: icmp_seq=1 ttl=64 time=268 ms
64 bytes from fe80::7af8:82ff:fea2:3210%wlp8s0: icmp_seq=2 ttl=64 time=91.8 ms
ping6 on my desktop. broadcast addr
andrey@andrey-Lenovo-ideapad-Y700-17ISK:~$ ping6 FF02::1
PING FF02::1(ff02::1) 56 data bytes
64 bytes from fe80::405a:e0a5:e054:cbde%wlp8s0: icmp_seq=1 ttl=64 time=0.046 ms
64 bytes from fe80::8616:f9ff:fe48:7a06%wlp8s0: icmp_seq=1 ttl=64 time=107 ms (DUP!)
64 bytes from fe80::b6ce:f6ff:fedf:b4af%wlp8s0: icmp_seq=1 ttl=64 time=112 ms (DUP!)
64 bytes from fe80::7af8:82ff:fea2:3210%wlp8s0: icmp_seq=1 ttl=64 time=200 ms (DUP!)
use the following syntax on Android:
ping6 fe80::405a:e0a5:e054:cbde%wlan0
You must add %wlan0 since it is a link-local address, and your android device has multiple interfaces (Wi-Fi and mobile at least), so you need to tell your device the interface/link you want to use with this link-local address.
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