diff -r 3e63050481a8 sys/src/cmd/ip/ppp/ppp.c
--- a/sys/src/cmd/ip/ppp/ppp.c	Sat Mar 05 07:44:02 2016 +0100
+++ b/sys/src/cmd/ip/ppp/ppp.c	Sat Mar 05 07:47:52 2016 +0100
@@ -276,7 +276,14 @@
 		ppp->rctlmap = 0;
 		ppp->ipcp->state = Sclosed;
 		ppp->ipcp->optmask = 0xffffffff;
-
+		if(noipcompress) {
+			p->optmask &= ~Fac;
+			ppp->ipcp->optmask &= ~Fipaddrs;
+		}
+		if(nocompress) {
+			p->optmask &= ~Fpc;
+			ppp->ipcp->optmask &= ~Fipcompress;
+		}
 		p->echotimeout = 0;
 
 		/* quality goo */