<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">You’ll also have to rewrite the linux kernel which treats all of 127.0.0.0/8 as quasi-automatically configured on interface lo.<div class=""><br class=""></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000</span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00</span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> inet 127.0.0.1/8 scope host lo</span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> valid_lft forever preferred_lft forever</span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> inet6 ::1/128 scope host </span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> valid_lft forever preferred_lft forever</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">PING 127.5.20.2 (127.5.20.2) 56(84) bytes of data.</span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class="">64 bytes from 127.5.20.2: icmp_seq=1 ttl=64 time=0.064 ms</div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">64 bytes from 127.5.20.2: icmp_seq=2 ttl=64 time=0.063 ms</span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">64 bytes from 127.5.20.2: icmp_seq=3 ttl=64 time=0.061 ms</span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">^C</span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">--- 127.5.20.2 ping statistics ---</span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">3 packets transmitted, 3 received, 0% packet loss, time 54ms</span></div><div style="margin: 0px; font-stretch: normal; font-size: 16px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">rtt min/avg/max/mdev = 0.061/0.062/0.064/0.009 ms</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class="">YMMV</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Owen</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div></span></div><div><br class=""><blockquote type="cite" class=""><div class="">On May 17, 2019, at 14:07 , Töma Gavrichenkov <<a href="mailto:ximaera@gmail.com" class="">ximaera@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="auto" class=""><div class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, May 17, 2019, 11:40 PM william manning <<a href="mailto:chinese.apricot@gmail.com" class="">chinese.apricot@gmail.com</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="">A much simpler task than repurposing v4 multicast would be to just use the exisiting /8 that everyone already has in use. May I present for your consideration; <a href="http://127.0.0.0/8" target="_blank" rel="noreferrer" class="">127.0.0.0/8</a></div></blockquote></div></div><div dir="auto" class=""><span style="font-family:sans-serif" class=""><br class=""></span></div><div dir="auto" class=""><span style="font-family:sans-serif" class="">Such a flavor of network engineering sort of assumes one's ready to maintain a substantial number of patches though.</span></div><div dir="auto" class=""><span style="font-family:sans-serif" class=""><br class=""></span></div><div dir="auto" class=""><span style="font-family:sans-serif" class="">(</span><span style="font-family:sans-serif" class="">/me also used up to a few /22s out of 127/8 back in the past. Was a weird experience because of several reasons.)</span></div><div dir="auto" class=""><span style="font-family:sans-serif" class=""><br class=""></span></div><div dir="auto" class=""><span style="font-family:sans-serif" class="">The "IPv4 unicast extensions" project might sort it out eventually, together with </span><span style="font-family:sans-serif" class="">the unused multicast and "experimental" space.</span></div><div dir="auto" class=""><span style="font-family:sans-serif" class=""><br class=""></span></div><div dir="auto" class=""><span style="font-family:sans-serif" class="">--</span></div><div dir="auto" class=""><span style="font-family:sans-serif" class="">Töma</span></div></div>
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