5.0.0: 🐞: IPv4 regex, hex includes dashes

Docker/sslip.io-dns-server/Dockerfile

@@ -26,7 +26,7 @@ LABEL org.opencontainers.image.authors="Brian Cunnie <brian.cunnie@gmail.com>"
 RUN dnf install -y bind-utils
 
 ARG TARGETARCH # amd64, arm64 (so I can run on AWS graviton2)
-RUN curl -f -L https://github.com/cunnie/sslip.io/releases/download/4.2.3/sslip.io-dns-server-linux-$TARGETARCH \
+RUN curl -f -L https://github.com/cunnie/sslip.io/releases/download/5.0.0/sslip.io-dns-server-linux-$TARGETARCH \
   -o /usr/sbin/sslip.io-dns-server; \
   chmod 755 /usr/sbin/sslip.io-dns-server
 

bin/make_all

@@ -4,7 +4,7 @@
 #
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 cd $DIR/..
-ldflags="-X xip/xip.VersionSemantic=4.2.3 \
+ldflags="-X xip/xip.VersionSemantic=5.0.0 \
          -X xip/xip.VersionDate=$(date +%Y/%m/%d-%H:%M:%S%z) \
          -X xip/xip.VersionGitHash=$(git rev-parse --short HEAD)"
 export GOOS GOARCH

docs/DEVELOPER.md

@@ -4,8 +4,8 @@ These instructions are meant primarily for me when deploying a new release;
 they might not make sense unless you're on my workstation.
 
 ```bash
-export OLD_VERSION=4.2.2
-export VERSION=4.2.3
+export OLD_VERSION=4.2.3
+export VERSION=5.0.0
 cd ~/workspace/sslip.io
 git pull -r --autostash
 # update the version number for the TXT record for version.status.sslip.io
@@ -41,7 +41,7 @@ Test from another window:
 
 ```bash
 export DNS_SERVER_IP=127.0.0.1
-export VERSION=4.2.3
+export VERSION=5.0.0
 # quick sanity test
 ( dig +short 127.0.0.1.example.com @$DNS_SERVER_IP
 echo 127.0.0.1 ) | uniq -c
@@ -82,7 +82,7 @@ Review the output then close the second window. Stop the server in the
 original window. Commit our changes:
 
 ```bash
-GIT_MESSAGE="$VERSION: performance: blocklist 5x speedup"
+GIT_MESSAGE="$VERSION: 🐞: IPv4 regex, hex includes dashes"
 git add -p
 git ci -vm"$GIT_MESSAGE"
 git tag $VERSION

spec/check-dns_spec.rb

@@ -20,7 +20,7 @@ end
 
 domains_env = ENV['DOMAINS'] || 'example.com'
 domains = domains_env.split(',').map(&:strip)
-sslip_version = '4.2.3'
+sslip_version = '5.0.0'
 
 domains.each do |domain|
   whois_nameservers = get_whois_nameservers(domain)