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[lwip-devel] [bug #61653] PPP Netmask Changed
From: |
Sylvain Rochet |
Subject: |
[lwip-devel] [bug #61653] PPP Netmask Changed |
Date: |
Fri, 10 Dec 2021 10:01:46 -0500 (EST) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:94.0) Gecko/20100101 Firefox/94.0 |
Follow-up Comment #1, bug #61653 (project lwip):
Hi Ashley,
What do you mean by "the PPP link is configured for netmask 255.255.255.0" ?
For PPP "client mode", netmask can be set by IPCP from the peer if the peer
send the netmask option, otherwise 255.255.255.255 is a sane default. Or is it
broken ? Could you send the PPP packet trace ?
get_mask() is a leftover from pppd and is for unix-like systems with multiple
interfaces and is only useful when IP forwarding is enabled on the client
side. It achieves something similar to ARP proxy. This is mostly a hack to
offer professional customers a subnet of more than one IP address and it is a
very uncommon design today, proper IP routing is preferred.
Sylvain
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