<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=""><font size="4" class="">I am running a PXE service on buster.</font><div class=""><font size="4" class="">On a client it searches for a DHCP server, for about a minute. Meanwhile on the server "</font><span style="font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); text-decoration: underline; font-variant-ligatures: no-common-ligatures; color: rgb(52, 188, 38);" class="">sudo</span><span style="color: rgb(40, 254, 20); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures; color: rgb(52, 188, 38);" class="">systemctl</span><span style="color: rgb(40, 254, 20); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures;" class=""> status isc-dhcp-server.service</span><span style="font-family: "Andale Mono"; font-size: 18px; font-variant-ligatures: no-common-ligatures; background-color: rgb(255, 255, 255);" class="">” </span><span style="font-size: 18px; font-variant-ligatures: no-common-ligatures; background-color: rgb(255, 255, 255);" class="">reports</span><span style="font-family: "Andale Mono"; font-size: 18px; font-variant-ligatures: no-common-ligatures; background-color: rgb(255, 255, 255);" class=""> …</span><span style="color: rgb(40, 254, 20); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures;" class="">Active: </span><span style="font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures; color: rgb(195, 55, 32);" class="">failed</span><span style="color: rgb(40, 254, 20); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures;" class=""> (Result: exit-code)</span><span style="background-color: rgb(255, 255, 255);" class=""><font face="Andale Mono" size="4" class="">…</font><font size="4" class=""> . Then I issue </font><font face="Andale Mono" size="4" class="">“</font></span><span style="font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); text-decoration: underline; font-variant-ligatures: no-common-ligatures; color: rgb(52, 188, 38);" class="">sudo</span><span style="color: rgb(40, 254, 20); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures; color: rgb(52, 188, 38);" class="">systemctl</span><span style="color: rgb(40, 254, 20); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures;" class=""> restart isc-dhcp-server.service</span><span style="background-color: rgb(255, 255, 255);" class=""><font face="Andale Mono" size="4" class="">” - </font><font size="4" class="">reply</font><font face="Andale Mono" size="4" class="">:”</font></span><span style="color: rgb(40, 254, 20); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961);" class="">Job for isc-dhcp-server.service failed because the control process exited with error code.</span><span style="background-color: rgb(255, 255, 255);" class=""><font face="Andale Mono" size="4" class="">…”.</font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font size="4" class="">However back on the client, I restart and again it searches for a DHCP server. In a second or two it is assigned an IP …</font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font size="4" class="">On the server,</font><font size="4" class=""> </font><font face="Andale Mono" size="4" class="">“</font></span><span style="font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); text-decoration: underline; font-variant-ligatures: no-common-ligatures; color: rgb(52, 188, 38);" class="">sudo</span><span style="color: rgb(40, 254, 20); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures;" class=""> </span><span style="font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures; color: rgb(52, 188, 38);" class="">systemctl</span><span style="color: rgb(40, 254, 20); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures;" class=""> status isc-dhcp-server.service</span><span style="background-color: rgb(255, 255, 255);" class=""><font face="Andale Mono" size="4" class="">” </font><font size="4" class="">tells me the</font><font face="Andale Mono" size="4" class=""> </font><font size="4" class="">PID</font><font face="Andale Mono" size="4" class="">. “</font></span><span style="color: rgb(52, 188, 38); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures;" class="">journalctl</span><span style="font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961); font-variant-ligatures: no-common-ligatures; color: rgb(40, 254, 20);" class=""> _PID=1234</span><span style="background-color: rgb(255, 255, 255);" class=""><font face="Andale Mono" size="4" class="">”</font><font size="4" class=""> </font><font size="4" class="">gives all the messages</font><font size="4" class=""> </font><font face="Andale Mono" size="4" class="">“… </font></span><span style="color: rgb(40, 254, 20); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961);" class="">DHCPINFORM from x.y.z.xx via wlan0</span><span style="background-color: rgb(255, 255, 255);" class=""><font face="Andale Mono" size="4" class="">” </font><font size="4" class="">and</font><font face="Andale Mono" size="4" class=""> “… </font></span><span style="color: rgb(40, 254, 20); font-family: "Andale Mono"; font-size: 18px; background-color: rgba(0, 0, 0, 0.901961);" class="">DHCPACK to x.y.z.xx (a:b:c:d:e:f) via wlan0</span><span style="background-color: rgb(255, 255, 255);" class=""><font face="Andale Mono" size="4" class="">” - </font><font size="4" class="">over and</font><font size="4" class=""> </font><font size="4" class="">over.</font></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><font size="4" class="">Why does it report failed (with non-error responses) when it works?</font></span></div></body></html>