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Tweak dhclient arguments for readability

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A number of tests and examples use dhclient in both IPv4 and IPv6 modes.
We use "dhclient -6" for IPv6, but usually just "dhclient" for IPv4.  Add
an explicit "-4" argument to make it more clear and explicit.

In addition, when dhclient is run from within pasta it usually won't be
"real" root, and so will not have access to write the default global pid
file.  This results in a mostly harmless but irritating error:
    Can't create /var/run/dhclient.pid: Permission denied
We can avoid that by using the --no-pid flag to dhclient.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson
2022-06-10 12:32:43 +10:00
committed by Stefano Brivio
parent 2320ac3349
commit ca0c33ae5b
10 changed files with 17 additions and 17 deletions
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passt.1
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@@ -484,7 +484,7 @@ udhcpc: started, v1.30.1
udhcpc: sending discover
udhcpc: sending select for 192.168.1.118
udhcpc: lease of 192.168.1.118 obtained, lease time 4294967295
# dhclient -6
# dhclient -6 --no-pid
# ip address show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
@@ -581,7 +581,7 @@ udhcpc: started, v1.30.1
udhcpc: sending discover
udhcpc: sending select for 192.168.1.118
udhcpc: lease of 192.168.1.118 obtained, lease time 4294967295
# dhclient -6
# dhclient -6 --no-pid
# ip address show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00