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| author | Ravinou <39600829+Ravinou@users.noreply.github.com> | 2021-10-15 18:13:06 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-10-15 18:13:06 +0200 |
| commit | e05e633014628a65942cffab66f68228b6e17f7a (patch) | |
| tree | f7598f1792f2c68a85e166c1153d8f3e59dbf948 | |
| parent | 5f4c2f8a389017fcffa8f1b53add02a9b014b224 (diff) | |
Better IPv4 detection (#278)
On some systems like Hetzner VM cloud i have a Point-to-Point interface so i have a peer address on the same line as my public IPv4 (look at peer here : https://linux.die.net/man/8/ip )
An example of `ip a` with peer is :
```
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 96:00:00:a2:88:c2 brd ff:ff:ff:ff:ff:ff
altname enp0s3
inet XX.XX.XX.XX peer XX.XX.XX.XX/32 brd XX.XX.XX.XX scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::9400:ff:fea2:88c2/64 scope link
valid_lft forever preferred_lft forever
```
With a peer, the output of the command line 74 is : `XX.XX.XX.XX peer XX.XX.XX.XX`
I just modify this line with awk to print only the first field which is always the IPv4.
I think it's correct and it's work like a charm when there is a peer or not now. But tell me if it's not good for you :)
Thanks for your work !
| -rw-r--r-- | wireguard-install.sh | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/wireguard-install.sh b/wireguard-install.sh index 9c2c82e..71d8616 100644 --- a/wireguard-install.sh +++ b/wireguard-install.sh @@ -71,7 +71,7 @@ function installQuestions() { echo "" # Detect public IPv4 or IPv6 address and pre-fill for the user - SERVER_PUB_IP=$(ip -4 addr | sed -ne 's|^.* inet \([^/]*\)/.* scope global.*$|\1|p' | head -1) + SERVER_PUB_IP=$(ip -4 addr | sed -ne 's|^.* inet \([^/]*\)/.* scope global.*$|\1|p' | awk '{print $1}' | head -1) if [[ -z ${SERVER_PUB_IP} ]]; then # Detect public IPv6 address SERVER_PUB_IP=$(ip -6 addr | sed -ne 's|^.* inet6 \([^/]*\)/.* scope global.*$|\1|p' | head -1) |