diff --git a/net/linux-lib.pl b/net/linux-lib.pl
index 06a7014b9..47f0c733e 100755
--- a/net/linux-lib.pl
+++ b/net/linux-lib.pl
@@ -948,8 +948,7 @@ close(SWITCH);
 &open_tempfile(SWITCH, ">/etc/nsswitch.conf");
 foreach (@switch) {
 	if (/^\s*hosts:\s+/) {
-		&print_tempfile(SWITCH,
-			&linux_nsswitch_hosts_line($_, $conf->{'order'}));
+		&print_tempfile(SWITCH, "hosts:\t$conf->{'order'}\n");
 		}
 	else {
 		&print_tempfile(SWITCH, $_);
@@ -1014,20 +1013,4 @@ else {
 	}
 }
 
-# linux_nsswitch_hosts_line(line, order)
-# Returns an updated nsswitch hosts line preserving existing spacing
-sub linux_nsswitch_hosts_line
-{
-my ($line, $order) = @_;
-$line =~ s/\r?\n$//;
-my $comment = "";
-if ($line =~ s/(\s+#.*)$//) {
-	# Keep inline comments while replacing only the lookup order.
-	$comment = $1;
-	}
-return $1.$2.$order.$comment."\n"
-	if ($line =~ /^(\s*hosts:)(\s+)\S/);
-return "hosts:\t$order$comment\n";
-}
-
 1;
diff --git a/net/net-lib.pl b/net/net-lib.pl
index 779171577..54deaa558 100755
--- a/net/net-lib.pl
+++ b/net/net-lib.pl
@@ -57,34 +57,18 @@ local $line="";
 &open_readfile(HOSTS, $config{'hosts_file'});
 while($line=<HOSTS>) {
 	local $comment = 0;
-	local $comment_prefix = "";
-	local $leading = "";
-	local $inline_comment = "";
 	$line =~ s/\r|\n//g;
-	if ($line =~ s/^(\s*#+\s*)//) {
+	if ($line =~ s/^\s*#+\s*//) {
 		$comment = 1;
-		$comment_prefix = $1;
-		}
-	elsif ($line =~ s/^(\s+)//) {
-		# Preserve indentation if this file uses it for host rows.
-		$leading = $1;
-		}
-	if ($line =~ s/(\s+#.*)$//) {
-		# Keep inline comments attached to edited host rows.
-		$inline_comment = $1;
 		}
+	$line =~ s/#.*$//g;
 	$line =~ s/\s+$//g;
-	local @seps = &host_line_separators($line);
 	local @f = split(/\s+/, $line);
 	local $ipaddr = shift(@f);
 	if (check_ipaddress_any($ipaddr)) {
 		push(@rv, { 'address' => $ipaddr,
 			    'hosts' => [ @f ],
 			    'active' => !$comment,
-			    'comment_prefix' => $comment_prefix,
-			    'leading' => $leading,
-			    'comment' => $inline_comment,
-			    'seps' => \@seps,
 			    'line', $lnum,
 			    'index', scalar(@rv) });
 		}
@@ -94,35 +78,13 @@ close(HOSTS);
 return @rv;
 }
 
-# host_line_separators(line)
-# Returns the field separators from a parsed /etc/hosts line
-sub host_line_separators
-{
-local ($line) = @_;
-local @seps;
-while($line =~ /\S+(\s+)/g) {
-	push(@seps, $1);
-	}
-return @seps;
-}
-
 # make_host_line(&host)
 # Internal function to return a line for the hosts file
 sub make_host_line
 {
 local ($host) = @_;
-local $prefix = $host->{'active'} ? $host->{'leading'} || "" :
-		$host->{'comment_prefix'} || "# ";
-local @seps = @{$host->{'seps'} || [ ]};
-local @hosts = @{$host->{'hosts'} || [ ]};
-local $line = $prefix.$host->{'address'};
-for(local $i=0; $i<@hosts; $i++) {
-	# Reuse original spacing by field position, then fall back to defaults.
-	local $sep = $seps[$i] || ($i == 0 ? "\t" : " ");
-	$line .= $sep.$hosts[$i];
-	}
-$line .= $host->{'comment'} if ($host->{'comment'});
-return $line."\n";
+return ($host->{'active'} ? "" : "# ").
+       $host->{'address'}."\t".join(" ",@{$host->{'hosts'}})."\n";
 }
 
 # create_host(&host)
@@ -528,3 +490,4 @@ return $a->{'virtual'} eq '' ? -1 :
 }
 
 1;
+
diff --git a/net/save_dns.cgi b/net/save_dns.cgi
index 617b4d72a..876bb50be 100755
--- a/net/save_dns.cgi
+++ b/net/save_dns.cgi
@@ -124,19 +124,6 @@ if (&foreign_installed("postfix") && $in{'hostname'} ne $old_hostname) {
 		&postfix::set_current_value("mydestination",
 					    join(", ", @mydests));
 		}
-	$old_domain = $old_hostname =~ /^[^\.]+\.(.*)$/ ? $1 :
-		      $old_fqdn =~ /^[^\.]+\.(.*)$/ ? $1 : undef;
-	$new_domain = $in{'hostname'} =~ /^[^\.]+\.(.*)$/ ? $1 :
-		      $new_fqdn =~ /^[^\.]+\.(.*)$/ ? $1 : undef;
-	if ($old_domain && $new_domain &&
-	    lc($old_domain) ne lc($new_domain)) {
-		$idx = &indexoflc("localhost.$old_domain", @mydests);
-		if ($idx >= 0) {
-			$mydests[$idx] = "localhost.$new_domain";
-			&postfix::set_current_value("mydestination",
-						    join(", ", @mydests));
-			}
-		}
 
 	# Update postfix myorigin
 	$myorigin = &postfix::get_current_value("myorigin");
@@ -160,3 +147,4 @@ if (&foreign_installed("postfix") && $in{'hostname'} ne $old_hostname) {
 
 &webmin_log("dns", undef, undef, \%in);
 &redirect("");
+
diff --git a/net/t/run-tests.t b/net/t/run-tests.t
index 546741f87..bd5b550e4 100644
--- a/net/t/run-tests.t
+++ b/net/t/run-tests.t
@@ -149,15 +149,6 @@ do "$root/net/netplan-lib.pl" || die "netplan-lib.pl: $@ $!";
 	$main::netplan_dir = $tmp;
 }
 
-is(main::linux_nsswitch_hosts_line("hosts:          files dns\n",
-				   "files dns"),
-   "hosts:          files dns\n",
-   "Linux DNS save preserves nsswitch hosts spacing");
-is(main::linux_nsswitch_hosts_line("hosts:\tfiles dns # local policy\n",
-				   "files mdns4 dns"),
-   "hosts:\tfiles mdns4 dns # local policy\n",
-   "Linux DNS save preserves nsswitch hosts comments");
-
 my $netplan = "$tmp/50-cloud-init.yaml";
 write_text($netplan, <<'YAML');
 network: