diff --git a/krebs/3modules/shared/default.nix b/krebs/3modules/shared/default.nix
index a05889632..8870f039c 100644
--- a/krebs/3modules/shared/default.nix
+++ b/krebs/3modules/shared/default.nix
@@ -13,12 +13,8 @@ let
     cores = 1;
     nets = {
       retiolum = {
-        ip4.addr = "10.243.111.111";
+        ip4.addr = "10.243.73.57";
         ip6.addr = "42:0:0:0:0:0:0:7357";
-        aliases = [
-          "test.r"
-          "test.retiolum"
-        ];
         tinc.pubkey = ''
           -----BEGIN RSA PUBLIC KEY-----
           MIIBCgKCAQEAy41YKF/wpHLnN370MSdnAo63QUW30aw+6O79cnaJyxoL6ZQkk4Nd
diff --git a/krebs/5pkgs/irc-announce/default.nix b/krebs/5pkgs/irc-announce/default.nix
index af6b35ec6..e1f4919d5 100644
--- a/krebs/5pkgs/irc-announce/default.nix
+++ b/krebs/5pkgs/irc-announce/default.nix
@@ -29,12 +29,10 @@ pkgs.writeDashBin "irc-announce" ''
   # privmsg_cat transforms stdin to a privmsg
   privmsg_cat() { awk '{ print "PRIVMSG "ENVIRON["IRC_CHANNEL"]" :"$0 }'; }
 
-  # we cd to /tmp here to be able to create a tmpdir in the first place
-  cd /tmp
   # ircin is used to feed the output of netcat back to the "irc client"
   # so we can implement expect-like behavior with sed^_^
   # XXX mkselfdestructingtmpfifo would be nice instead of this cruft
-  tmpdir="$(mktemp -d irc-announce_XXXXXXXX)"
+  tmpdir=$(mktemp --tmpdir -d irc-announce_XXXXXXXX)
   cd "$tmpdir"
   mkfifo ircin
   trap "