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Why pppd pppol2tp plugin disable compression options?
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Olivier Langlois
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Feb 26, 2021, 2:12:14 PM
2/26/21
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In the file pppd/plugins/pppol2tp/pppol2tp.c
there is this code:
/* Setup option defaults. Compression options are disabled! */
modem = 0;
lcp_allowoptions[0].neg_accompression = 1;
lcp_wantoptions[0].neg_accompression = 0;
lcp_allowoptions[0].neg_pcompression = 1;
lcp_wantoptions[0].neg_pcompression = 0;
and I have been wondering why no matter what options I was trying tweak, I couldn't make me side of PPP link use VJ:
Feb 26 10:31:00 whippet2 pppd[72589]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0>]
Feb 26 10:31:00 whippet2 pppd[72589]: rcvd [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 10.255.255.0>]
Feb 26 10:31:00 whippet2 pppd[72589]: sent [IPCP ConfRej id=0x1 <compress VJ 0f 01>]
Feb 26 10:31:00 whippet2 pppd[72589]: rcvd [IPCP ConfNak id=0x1 <addr 198.18.193.208>]
Feb 26 10:31:00 whippet2 pppd[72589]: sent [IPCP ConfReq id=0x2 <addr 198.18.193.208>]
Feb 26 10:31:00 whippet2 pppd[72589]: rcvd [IPCP ConfReq id=0x2 <addr 10.255.255.0>]
Feb 26 10:31:00 whippet2 pppd[72589]: sent [IPCP ConfAck id=0x2 <addr 10.255.255.0>]
Feb 26 10:31:00 whippet2 pppd[72589]: rcvd [IPCP ConfAck id=0x2 <addr 198.18.193.208>]
Any idea why this restriction is in place? The other side was willing to use compression.
thx,
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