[lwip-devel] [bug #61653] PPP Netmask Changed

[Sylvain Rochet]

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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