{"id":1471,"date":"2014-01-29T10:14:38","date_gmt":"2014-01-29T09:14:38","guid":{"rendered":"https:\/\/locallost.net\/?p=1471"},"modified":"2014-01-29T10:21:01","modified_gmt":"2014-01-29T09:21:01","slug":"siara-systems-leaking-cpes-mac-addresses","status":"publish","type":"post","link":"https:\/\/locallost.net\/?p=1471","title":{"rendered":"Siara Systems leaking CPE&rsquo;s MAC addresses?"},"content":{"rendered":"<p>After a DSL\/network outage, I launched a <code>tcpdump<\/code> on the ethernet interface to see if <code>pppd<\/code> was renegotiating the PPPoE session, and I saw all these LCP Term-Request frames that seems to come from other customers&rsquo; equipments (given the various source MAC addresses) and destined to a Siara Systems equipment (which I guess is a DSLAM, or core router, on which all these equipments are connected).<\/p>\n<p>Is this an expected behavior to receive all these LCP Term-Request frames?<\/p>\n<p>Here is a sample of unique\/sorted frames captured during the DSL\/network outage:<\/p>\n<p><!--more--><\/p>\n<pre>01:43:37.783709 00:78:9e:58:bb:b8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x117f] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:00.863773 00:78:9e:5f:2c:c8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x45d6] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:39.891787 00:78:9e:62:da:78 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x466a] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:37.916040 02:1f:9f:bf:ed:8e > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x183] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:06.737300 02:1f:9f:f5:55:dc > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x3072] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:13.254152 02:1f:9f:f6:58:58 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0xcda] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:56.829946 02:1f:9f:f7:1e:18 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x318b] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:25.805421 02:1f:9f:fb:ee:d8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x58f6] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:00.106659 02:26:44:f3:e1:e8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x9dc] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:03.889851 02:26:44:fb:96:b6 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x4f4] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:40.239677 06:1f:9f:76:cb:46 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x3b2] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:41.989293 06:1f:9f:ae:53:8a > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x222c] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:29.578837 06:1f:9f:bc:87:b0 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x2a27] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:06.628401 06:1f:9f:bd:2c:ec > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x2c6c] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:28.535989 06:1f:9f:be:ad:d8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x1630] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:45:18.006246 06:1f:9f:be:e2:a0 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x977] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:42.814223 06:1f:9f:e4:2e:4e > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x2a61] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:51.234332 06:1f:9f:e4:bb:1c > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x14a] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:46:43.938962 06:1f:9f:e5:cb:06 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x370c] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:37.687214 06:1f:9f:e7:37:28 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x1c23] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:32.994073 06:1f:9f:e8:f7:7e > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x5dc] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:32.055133 06:1f:9f:ee:41:8c > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x419c] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:16.665614 06:1f:9f:ee:ed:4e > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x18b9] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:20.254643 06:1f:9f:ef:c4:9e > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x2ab8] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:28.524629 06:1f:9f:f5:68:32 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x5140] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:39.691801 06:1f:9f:f5:fc:50 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x3ce] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:35.117619 06:1f:9f:f7:db:40 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x328d] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:02.623188 06:1f:9f:fb:c3:4e > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x168a] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:17.612460 06:1f:9f:fc:a6:3c > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x341f] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:08.671161 06:26:44:fb:79:be > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x1c41] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:39.495849 64:7c:34:09:12:ec > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x181b] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:59.234144 64:7c:34:0b:32:2c > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x3a3a] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:27.681307 64:7c:34:0b:48:dc > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x28bb] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:09.627908 c0:ac:54:08:85:c8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x11db] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:13.616575 c0:ac:54:1a:83:28 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x212c] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:45:40.047519 c0:ac:54:20:63:08 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x3e8d] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:00.905181 c0:ac:54:2f:6d:88 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x2a40] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:39.535502 c0:ac:54:30:92:c8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0xfc8] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:14.407724 c0:ac:54:33:af:58 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x257b] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:04.088399 c0:ac:54:34:36:48 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x3a79] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:39.085678 c0:ac:54:34:72:b8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0xad0] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:02.626880 c0:ac:54:3c:8f:48 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x2729] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:58.963436 d8:6c:e9:87:76:58 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x3887] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:30.327478 d8:6c:e9:91:a3:88 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x2894] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:31.337368 d8:6c:e9:92:ef:58 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x199] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:37.486142 d8:6c:e9:97:9a:b8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x1b70] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:49.567312 d8:6c:e9:9b:cf:88 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x1ef2] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:39.897440 d8:6c:e9:a1:95:48 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x2269] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:49.382321 d8:6c:e9:a5:6b:d8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x2b38] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:44:18.604134 e8:f1:b0:d9:88:98 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0xd00] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:45:37.624051 e8:f1:b0:e9:c4:e8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x1973] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:28.137089 e8:f1:b0:ea:65:e8 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x1caa] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:34.298698 e8:f1:b0:f0:62:08 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x5006] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n01:43:56.281793 e8:f1:b0:f8:7c:38 > 00:30:88:19:df:fe, ethertype PPPoE S (0x8864), length 60: PPPoE  [ses 0x2f5f] LCP (0xc021), length 31: LCP, Term-Request (0x05), id 1, length 31\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>After a DSL\/network outage, I launched a tcpdump on the ethernet interface to see if pppd was renegotiating the PPPoE session, and I saw all these LCP Term-Request frames that seems to come from other customers&rsquo; equipments (given the various &hellip; <a href=\"https:\/\/locallost.net\/?p=1471\">Continuer la lecture <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-1471","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2Bei9-nJ","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/locallost.net\/index.php?rest_route=\/wp\/v2\/posts\/1471","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/locallost.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/locallost.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/locallost.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/locallost.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1471"}],"version-history":[{"count":6,"href":"https:\/\/locallost.net\/index.php?rest_route=\/wp\/v2\/posts\/1471\/revisions"}],"predecessor-version":[{"id":1477,"href":"https:\/\/locallost.net\/index.php?rest_route=\/wp\/v2\/posts\/1471\/revisions\/1477"}],"wp:attachment":[{"href":"https:\/\/locallost.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1471"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/locallost.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1471"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/locallost.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1471"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}