Date: Mon, 15 Apr 2002 12:12:12 -0700 (PDT) From: Brian Curnow <bc@sonnet.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/37109: Kernel refuses to assign unused IP to tun via ppp after some time Message-ID: <200204151912.g3FJCCJ39250@freefall.freebsd.org>
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>Number: 37109 >Category: kern >Synopsis: Kernel refuses to assign unused IP to tun via ppp after some time >Confidential: no >Severity: serious >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Apr 15 12:20:00 PDT 2002 >Closed-Date: >Last-Modified: >Originator: Brian Curnow >Release: 4.5-STABLE >Organization: >Environment: 4.5-STABLE FreeBSD 4.5-STABLE #0: Sat Apr 6 14:09:35 PST 2002 >Description: Using pptpd, ppp. Appears to be a kernel bug which believes that certain IPs, after having previously been used on interface, are still in use and refuses to allow ppp to assign them. Given enough time, this will cause even large ranges of IP to be unusable until reboot. I believe this is a kernel bug because my look at the ppp code seemed to be that ppp does not keep any state on IP or interface use, and tries range until the kernel accepts one that is offered. System is SMP. ppp.log errors: Error: iface_inAdd: ioctl(SIOCAIFADDR): 10.0.0.3: File exists Error: ipcp_InterfaceUp: unable to set ip address Warning: iface_addr_Zap: ioctl(SIOCDIFADDR, 10.0.0.3): Can't assign requested address IN this case, 10.0.0.3 is the local IP side, and the actual IP that can't be assigned is the peer IP of 10.0.0.61. In this case, changing the peer IP in /etc/ppp/ppp.secret allowed the connection to proceed. Over time, all IPs will become unusable. >How-To-Repeat: running ppp via tun interface to pptpd seems to cause problem over time. Perhaps a race condition? >Fix: Unknown. Cure by reboot. >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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