From owner-freebsd-net@freebsd.org Wed May 30 21:49:01 2018 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6949DF71799 for ; Wed, 30 May 2018 21:49:01 +0000 (UTC) (envelope-from freebsd-rwg@pdx.rh.CN85.dnsmgr.net) Received: from pdx.rh.CN85.dnsmgr.net (br1.CN84in.dnsmgr.net [69.59.192.140]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id AA02E7C770 for ; Wed, 30 May 2018 21:49:00 +0000 (UTC) (envelope-from freebsd-rwg@pdx.rh.CN85.dnsmgr.net) Received: from pdx.rh.CN85.dnsmgr.net (localhost [127.0.0.1]) by pdx.rh.CN85.dnsmgr.net (8.13.3/8.13.3) with ESMTP id w4ULmvxq073734; Wed, 30 May 2018 14:48:57 -0700 (PDT) (envelope-from freebsd-rwg@pdx.rh.CN85.dnsmgr.net) Received: (from freebsd-rwg@localhost) by pdx.rh.CN85.dnsmgr.net (8.13.3/8.13.3/Submit) id w4ULmsq4073733; Wed, 30 May 2018 14:48:54 -0700 (PDT) (envelope-from freebsd-rwg) From: "Rodney W. Grimes" Message-Id: <201805302148.w4ULmsq4073733@pdx.rh.CN85.dnsmgr.net> Subject: Re: 'no route to host" for cloned lo1 iface 12.0-CURRENT r334376+56a973815425(master) amd64 In-Reply-To: <876034evol.wl-herbert@gojira.at> To: "Herbert J. Skuhra" Date: Wed, 30 May 2018 14:48:54 -0700 (PDT) CC: freebsd-net@freebsd.org X-Mailer: ELM [version 2.4ME+ PL121h (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 May 2018 21:49:01 -0000 > On Wed, 30 May 2018 17:46:06 +0200, "Rodney W. Grimes" wrote: > > > > > On Wed, May 30, 2018 at 07:44:52AM -0700, Rodney W. Grimes wrote: > > > > > On Wed, May 30, 2018 at 03:59:12PM +0200, Andreas Nilsson wrote: > > > > > > On Wed, May 30, 2018 at 3:40 PM, Dave Cottlehuber wrote: > > > > > > > > > > > > > I have 10.241.0.0-15/16 bound to lo1 for jails, and I just realised it > > > > > > > doesn't work anymore. Boxes at $DAYJOB use the same config and work just > > > > > > > fine on 11.1R/amd64, otherwise I'd be fired.... this used to work ~ 1 month > > > > > > > ago, both on my desktop, and my laptop, and now doesn't. > > > > > > > > > > > > > > Have I mis-configured something blindingly obvious here before I embark > > > > > > > on a lengthy bisect? > > > > > > > > > > > > > > # grep -v \# /etc/rc.conf , elided > > > > > > > hostname=akai > > > > > > > kld_list="${kld_list} if_iwm if_axge if_ure if_ue" > > > > > > > ifconfig_ue0=DHCP > > > > > > > ifconfig_ue0_ipv6="inet6 accept_rtadv" > > > > > > > wlans_iwm0="wlan0" > > > > > > > ifconfig_wlan0="WPA DHCP" > > > > > > > ifconfig_wlan0_ipv6="inet6 accept_rtadv" > > > > > > > create_args_wlan0="country AT regdomain ETSI" > > > > > > > cloned_interfaces="${cloned_interfaces} lo1" > > > > > > > ifconfig_lo1_aliases="inet 10.241.0.0-15/16" > > > > > > > ip6addrctl_policy="ipv4_prefer" > > > > > > > > > > > > > > # netstat -4rn > > > > > > > Internet: > > > > > > > Destination Gateway Flags Netif Expire > > > > > > > default 172.16.2.1 UGS ue0 > > > > > > > 10.241.0.0 link#4 UH lo1 > > > > > > > 10.241.0.1 link#4 UH lo1 > > > > > > > 10.241.0.2 link#4 UH lo1 > > > > > > > 10.241.0.3 link#4 UH lo1 > > > > > > > 10.241.0.4 link#4 UH lo1 > > > > > > > 10.241.0.5 link#4 UH lo1 > > > > > > > 10.241.0.6 link#4 UH lo1 > > > > > > > 10.241.0.7 link#4 UH lo1 > > > > > > > 10.241.0.8 link#4 UH lo1 > > > > > > > 10.241.0.9 link#4 UH lo1 > > > > > > > 10.241.0.10 link#4 UH lo1 > > > > > > > 10.241.0.11 link#4 UH lo1 > > > > > > > 10.241.0.12 link#4 UH lo1 > > > > > > > 10.241.0.13 link#4 UH lo1 > > > > > > > 10.241.0.14 link#4 UH lo1 > > > > > > > 10.241.0.15 link#4 UH lo1 > > > > > > > 127.0.0.1 link#1 UH lo0 > > > > > > > 172.16.2.0/24 link#2 U ue0 > > > > > > > 172.16.2.92 link#3 UHS lo0 > > > > > > > 172.16.2.93 link#2 UHS lo0 > > > > > > > > > > > > > > # ifconfig > > > > > > > lo0: flags=8049 metric 0 mtu 16384 > > > > > > > options=680003 > > > > > > > inet6 ::1 prefixlen 128 > > > > > > > inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 > > > > > > > inet 127.0.0.1 netmask 0xff000000 > > > > > > > nd6 options=21 > > > > > > > groups: lo > > > > > > > ue0: flags=8843 metric 0 mtu 1500 > > > > > > > options=8000b > > > > > > > ether 74:da:38:d8:fe:a7 > > > > > > > inet6 fe80::76da:38ff:fed8:fea7%ue0 prefixlen 64 scopeid 0x2 > > > > > > > inet 172.16.2.93 netmask 0xffffff00 broadcast 172.16.2.255 > > > > > > > nd6 options=23 > > > > > > > media: Ethernet autoselect (1000baseT ) > > > > > > > status: active > > > > > > > wlan0: flags=8943 metric > > > > > > > 0 mtu 1500 > > > > > > > ether 00:28:f8:d0:91:52 > > > > > > > inet6 fe80::228:f8ff:fed0:9152%wlan0 prefixlen 64 scopeid 0x3 > > > > > > > inet 172.16.2.92 netmask 0xffffff00 broadcast 172.16.2.255 > > > > > > > nd6 options=23 > > > > > > > media: IEEE 802.11 Wireless Ethernet OFDM/54Mbps mode 11g > > > > > > > status: associated > > > > > > > ssid skunkwerks channel 6 (2437 MHz 11g) bssid 80:2a:a8:5a:bd:3f > > > > > > > regdomain ETSI country AT authmode WPA2/802.11i privacy ON > > > > > > > deftxkey UNDEF AES-CCM 2:128-bit txpower 30 bmiss 10 scanvalid 60 > > > > > > > protmode CTS wme roaming MANUAL > > > > > > > groups: wlan > > > > > > > lo1: flags=8049 metric 0 mtu 16384 > > > > > > > options=680003 > > > > > > > inet 10.241.0.0 netmask 0xffff0000 > > > > > > > inet 10.241.0.1 netmask 0xffffffff > > > > > > > inet 10.241.0.2 netmask 0xffffffff > > > > > > > inet 10.241.0.3 netmask 0xffffffff > > > > > > > inet 10.241.0.4 netmask 0xffffffff > > > > > > > inet 10.241.0.5 netmask 0xffffffff > > > > > > > inet 10.241.0.6 netmask 0xffffffff > > > > > > > inet 10.241.0.7 netmask 0xffffffff > > > > > > > inet 10.241.0.8 netmask 0xffffffff > > > > > > > inet 10.241.0.9 netmask 0xffffffff > > > > > > > inet 10.241.0.10 netmask 0xffffffff > > > > > > > inet 10.241.0.11 netmask 0xffffffff > > > > > > > inet 10.241.0.12 netmask 0xffffffff > > > > > > > inet 10.241.0.13 netmask 0xffffffff > > > > > > > inet 10.241.0.14 netmask 0xffffffff > > > > > > > inet 10.241.0.15 netmask 0xffffffff > > > > > > > nd6 options=29 > > > > > > > groups: lo > > > > > > > bridge0: flags=8843 metric 0 mtu > > > > > > > 1500 > > > > > > > description: vm-public > > > > > > > ether 02:63:d4:40:fe:00 > > > > > > > nd6 options=1 > > > > > > > groups: bridge > > > > > > > id 00:00:00:00:00:00 priority 0 hellotime 2 fwddelay 15 > > > > > > > maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200 > > > > > > > root id 00:00:00:00:00:00 priority 0 ifcost 0 port 0 > > > > > > > member: wlan0 flags=143 > > > > > > > ifmaxaddr 0 port 3 priority 128 path cost 370370 > > > > > > > > > > > > > > > > > > > > could you specify what exactly isn't working? How does the bridge fit into > > > > > > this setup? > > > > > > > > > > > > Best regards > > > > > > Andreas > > > > > > > > > > Hi, > > > > > > > > > > I think the problem is "No route to host". > > > > > > > > What command is trying to execute when this error is returned > > > > would help a great deal in trying to understand why it failed. > > > > > > I've just added the lines > > > > > > cloned_interfaces="lo1" > > > ifconfig_lo1_aliases="inet 10.241.0.0-15/16" > > > > > > to my rc.conf and rebooted. > > > > > > % ping 10.241.0.0 > > > PING 10.241.0.0 (10.241.0.0): 56 data bytes > > > ping: sendto: No route to host > > > > > > Changed lines to > > > > > > cloned_interfaces="lo1" > > > ifconfig_lo1="inet 10.241.0.0 netmask 0xffff0000" > > That is technically an invalid ifconfig. > > Your not suppose to use the "0"th host of a network. > > > > > ifconfig_lo1_aliases="inet 10.241.0.1-15 netmask 0xffffffff" > > > > > > and rebooted. > > > > > > % ping 10.241.0.0 > > > PING 10.241.0.0 (10.241.0.0): 56 data bytes > > > 64 bytes from 10.241.0.0: icmp_seq=0 ttl=64 time=0.085 ms > > > > Sending a packet to the "0"th IP on a network has special > > meaning, I just can not recall or find right now what that > > special meaning is and where it is documented. Is it > > "this host" on that network? > > > > Either way it is invalid to configure a "host" at an address > > that the host part of a ip address is all 0's, as that is > > reserved to mean "the network". > > > > Not that 10.241.1.0 IS a valid address, because of the subnet mask > > being /16 the host part contains 1.0, a valid non zero host part. > > Thanks. I wouldn't use such a network configuration myself. Just > wondering why one example works and the other doesn't although output > of e.g. ifconfig and netstat looks the same. And why Daves' configuration > worked before and nolonger does. Those are very good questions, and we should research into the answers for them. I suspect that this may of come about from the changes in the way the routing code works that use to reject the use of a "0" host address and no longer does. -- Rod Grimes rgrimes@freebsd.org