Date: Thu, 18 Apr 2019 09:43:39 -0500 From: Karl Denninger <karl@denninger.net> To: freebsd-net@freebsd.org Subject: Re: igb(4) media status incorrect when disconnected Message-ID: <c870f9d1-ab3e-f9c4-1b3b-fe5aca15290e@denninger.net> In-Reply-To: <CAKOb=Ya5LGn1YL2e677k%2Bsw64ttB_fPQuWXfPbZ%2BCEnqB8u6_g@mail.gmail.com> References: <CAKOb=Ya5LGn1YL2e677k%2Bsw64ttB_fPQuWXfPbZ%2BCEnqB8u6_g@mail.gmail.com>
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This is a cryptographically signed message in MIME format. --------------ms040908010100010209000301 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 4/16/2019 13:06, Nick Rogers wrote: > Hello, > > In 12.0-RELEASE, STABLE, and 13-CURRENT, gb(4) interfaces report an > incorrect media status after they are disconnected (ethernet cable > unplugged). Ifconfig reports active + autoselect/1000baseT when it shou= ld > report inactive. > > I filed a bug for this a few weeks ago and have not had any luck... > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D236724 > > I am wondering if anyone in this list has any ideas or can help me begi= n to > pinpoint where things are breaking down. My current thought is either t= he > driver does not receive the interrupt when its unplugged, or something = else > is wrong, but I am unsure how to verify this. An ifconfig down + up alw= ays > resolves it (corrects the status). > > Thank you. I just had this bite me (hard) on a gateway machine that "disappeared" offline from the Internet. A flap on the interface that appears to have come from the attached cable modem dropping the link to the unit momentarily resulted in a rebind BUT the address never got re-assigned to the igb0 interface.=C2=A0= A manual ifconfig down/up fixed it, but this was a quite-severe incident because it left the external connection completely invisible -- if there had been nobody available on the "inside" to do that manually..... I'm on 12-STABLE r343809 on the specific box in question. --=20 Karl Denninger karl@denninger.net <mailto:karl@denninger.net> /The Market Ticker/ /[S/MIME encrypted email preferred]/ --------------ms040908010100010209000301 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgMFADCABgkqhkiG9w0BBwEAAKCC DdgwggagMIIEiKADAgECAhMA5EiKghDOXrvfxYxjITXYDdhIMA0GCSqGSIb3DQEBCwUAMIGL MQswCQYDVQQGEwJVUzEQMA4GA1UECAwHRmxvcmlkYTESMBAGA1UEBwwJTmljZXZpbGxlMRkw FwYDVQQKDBBDdWRhIFN5c3RlbXMgTExDMRgwFgYDVQQLDA9DdWRhIFN5c3RlbXMgQ0ExITAf BgNVBAMMGEN1ZGEgU3lzdGVtcyBMTEMgMjAxNyBDQTAeFw0xNzA4MTcxNjQyMTdaFw0yNzA4 MTUxNjQyMTdaMHsxCzAJBgNVBAYTAlVTMRAwDgYDVQQIDAdGbG9yaWRhMRkwFwYDVQQKDBBD dWRhIFN5c3RlbXMgTExDMRgwFgYDVQQLDA9DdWRhIFN5c3RlbXMgQ0ExJTAjBgNVBAMMHEN1 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